CSS knapper

Indholdsfortegnelse

    Vis indholdsfortegnelse

Lær, hvordan du style knapper ved hjælp af CSS.

Grundlæggende knapstyling

Eksempel

.button {
  background-color: #4CAF50; /* Green */
  border: none;
    
color: white;
  padding: 15px 32px;
  text-align: center;
  
text-decoration: none;
  display: inline-block;
  font-size: 16px;
}

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  background-color: #04AA6D;
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
}
</style>
</head>
<body>

<h2>CSS Buttons</h2>

<button>Default Button</button>
<a href="#" class="button">Link Button</a>
<button class="button">Button</button>
<input type="button" class="button" value="Input Button">

</body>
</html>

Knap farver

Brug egenskaben baggrundsfarve til at ændre baggrundsfarven på -en knap:

Eksempel

.button1 {background-color: #4CAF50;} /* Green */
.button2 
{background-color: #008CBA;} /* Blue */
.button3 {background-color: 
#f44336;} /* Red */ 
.button4 {background-color: #e7e7e7; color: black;} /* Gray */ 
.button5 
{background-color: #555555;} /* Black */

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  background-color: #04AA6D; /* Green */
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
}

.button2 {background-color: #008CBA;} /* Blue */
.button3 {background-color: #f44336;} /* Red */ 
.button4 {background-color: #e7e7e7; color: black;} /* Gray */ 
.button5 {background-color: #555555;} /* Black */
</style>
</head>
<body>

<h2>Button Colors</h2>

<p>Change the background color of a button with the background-color property:</p>

<button class="button">Green</button>
<button class="button button2">Blue</button>
<button class="button button3">Red</button>
<button class="button button4">Gray</button>
<button class="button button5">Black</button>

</body>
</html>

Knap størrelser

Brug egenskaben font-size til at ændre skriftstørrelsen på en knap:

Eksempel

.button1 {font-size: 10px;}
.button2 {font-size: 12px;}
.button3 
{font-size: 16px;}
.button4 {font-size: 20px;}
.button5 {font-size: 24px;}

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  background-color: #04AA6D; /* Green */
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  margin: 4px 2px;
  cursor: pointer;
}

.button1 {font-size: 10px;}
.button2 {font-size: 12px;}
.button3 {font-size: 16px;}
.button4 {font-size: 20px;}
.button5 {font-size: 24px;}
</style>
</head>
<body>

<h2>Button Sizes</h2>

<p>Change the font size of a button with the font-size property:</p>

<button class="button button1">10px</button>
<button class="button button2">12px</button>
<button class="button button3">16px</button>
<button class="button button4">20px</button>
<button class="button button5">24px</button>

</body>
</html>

Brug egenskaben padding til at ændre udfyldningen af en knap:

Eksempel

.button1 {padding: 10px 
24px;}
.button2 {padding: 12px 28px;}
.button3 {padding: 14px 40px;}
.button4 {padding: 32px 16px;}
.button5 {padding: 16px;}

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  background-color: #04AA6D; /* Green */
  border: none;
  color: white;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
}

.button1 {padding: 10px 24px;}
.button2 {padding: 12px 28px;}
.button3 {padding: 14px 40px;}
.button4 {padding: 32px 16px;}
.button5 {padding: 16px;}
</style>
</head>
<body>

<h2>Button Padding</h2>

<p>Change the padding of a button with the padding property:</p>

<button class="button button1">10px 24px</button>
<button class="button button2">12px 28px</button>
<button class="button button3">14px 40px</button>
<button class="button button4">32px 16px</button>
<button class="button button5">16px</button>

</body>
</html>

Afrundede knapper

Brug egenskaben border-radius til at tilføje afrundede hjørner til en knap:

Eksempel

.button1 {border-radius: 2px;}
.button2 {border-radius: 4px;}
.button3 
{border-radius: 8px;}
.button4 {border-radius: 12px;}
.button5 {border-radius: 50%;}

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  background-color: #04AA6D; /* Green */
  border: none;
  color: white;
  padding: 20px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
}

.button1 {border-radius: 2px;}
.button2 {border-radius: 4px;}
.button3 {border-radius: 8px;}
.button4 {border-radius: 12px;}
.button5 {border-radius: 50%;}
</style>
</head>
<body>

<h2>Rounded Buttons</h2>

<p>Add rounded corners to a button with the border-radius property:</p>

<button class="button button1">2px</button>
<button class="button button2">4px</button>
<button class="button button3">8px</button>
<button class="button button4">12px</button>
<button class="button button5">50%</button>

</body>
</html>

Farvede knapkanter

Brug egenskaben border til at tilføje en farvet kant til en knap:

Eksempel

.button1 {
  background-color: white;
  color: black;
  
border: 2px solid #4CAF50; /* Green */
}
...

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  background-color: #04AA6D; /* Green */
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
}

.button1 {
  background-color: white; 
  color: black; 
  border: 2px solid #04AA6D;
}

.button2 {
  background-color: white; 
  color: black; 
  border: 2px solid #008CBA;
}

.button3 {
  background-color: white; 
  color: black; 
  border: 2px solid #f44336;
}

.button4 {
  background-color: white;
  color: black;
  border: 2px solid #e7e7e7;
}

.button5 {
  background-color: white;
  color: black;
  border: 2px solid #555555;
}
</style>
</head>
<body>

<h2>Colored Button Borders</h2>

<p>Use the border property to add a border to the button:</p>

<button class="button button1">Green</button>
<button class="button button2">Blue</button>
<button class="button button3">Red</button>
<button class="button button4">Gray</button>
<button class="button button5">Black</button>

</body>
</html>

Svæveknapper


Brug :hover-vælgeren til at ændre stilen på en knap, når du flytter musen hen over det.

Tip: Brug egenskaben transition-duration til at bestemme hastigheden af "hover"-effekten:

Eksempel

.button {
  
transition-duration: 0.4s;
}
.button:hover {
  
background-color: #4CAF50; /* Green */
  color: white;
}
...

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  background-color: #04AA6D; /* Green */
  border: none;
  color: white;
  padding: 16px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  transition-duration: 0.4s;
  cursor: pointer;
}

.button1 {
  background-color: white; 
  color: black; 
  border: 2px solid #04AA6D;
}

.button1:hover {
  background-color: #04AA6D;
  color: white;
}

.button2 {
  background-color: white; 
  color: black; 
  border: 2px solid #008CBA;
}

.button2:hover {
  background-color: #008CBA;
  color: white;
}

.button3 {
  background-color: white; 
  color: black; 
  border: 2px solid #f44336;
}

.button3:hover {
  background-color: #f44336;
  color: white;
}

.button4 {
  background-color: white;
  color: black;
  border: 2px solid #e7e7e7;
}

.button4:hover {background-color: #e7e7e7;}

.button5 {
  background-color: white;
  color: black;
  border: 2px solid #555555;
}

.button5:hover {
  background-color: #555555;
  color: white;
}
</style>
</head>
<body>

<h2>Hoverable Buttons</h2>

<p>Use the :hover selector to change the style of the button when you move the mouse over it.</p>
<p><strong>Tip:</strong> Use the transition-duration property to determine the speed of the "hover" effect:</p>

<button class="button button1">Green</button>
<button class="button button2">Blue</button>
<button class="button button3">Red</button>
<button class="button button4">Gray</button>
<button class="button button5">Black</button>

</body>
</html>

Skygge knapper

Brug egenskaben box-shadow til at tilføje skygger til en knap:

Eksempel

.button1 {
  box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2), 0 6px 20px 0 
rgba(0,0,0,0.19);
}
.button2:hover {
  box-shadow: 0 12px 
16px 0 rgba(0,0,0,0.24), 0 17px 50px 0 rgba(0,0,0,0.19);
}

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  background-color: #04AA6D; /* Green */
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
  -webkit-transition-duration: 0.4s; /* Safari */
  transition-duration: 0.4s;
}

.button1 {
  box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
}

.button2:hover {
  box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
}
</style>
</head>
<body>

<h2>Shadow Buttons</h2>

<p>Use the box-shadow property to add shadows to the button:</p>

<button class="button button1">Shadow Button</button>
<button class="button button2">Shadow on Hover</button>

</body>
</html>

Deaktiverede knapper

Brug egenskaben opacity til at tilføje gennemsigtighed til en knap (opretter en "deaktiveret" udseende).

Tip: Du kan også tilføje egenskaben cursor med en værdi på "ikke tilladt", som vil vise et "parkeringsforbud", når du fører musen hen over knap:

Eksempel

.disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  background-color: #04AA6D; /* Green */
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
}

.disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
</style>
</head>
<body>

<h2>Disabled Button</h2>

<p>Use the opacity property to add some transparency to a button (make it look disabled):</p>

<button class="button">Normal Button</button>
<button class="button disabled">Disabled Button</button>

</body>
</html>

Knap bredde


Som standard bestemmes størrelsen af knappen af dens tekstindhold (så bred som dens indhold). Brug egenskaben width til at ændre bredden af en knap:

Eksempel

.button1 {width: 250px;}
.button2 {width: 50%;}
.button3 {width: 
100%;}

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  background-color: #04AA6D; /* Green */
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
}

.button1 {width: 250px;}
.button2 {width: 50%;}
.button3 {width: 100%;}
</style>
</head>
<body>

<h2>Set Button Widths</h2>

<p>Use the width property to change the width of the button:</p>

<button class="button button1">250px</button><br>
<button class="button button2">50%</button><br>
<button class="button button3">100%</button>

<p><strong>Tip:</strong> Use pixels if you want to set a fixed width and use percent for responsive buttons (e.g. 50% of its parent element). Resize the browser window to see the effect.</p>

</body>
</html>

Knapgrupper



Fjern margener og tilføj float:left til hver knap for at oprette en knapgruppe:

Eksempel

.button {
  float: left;
}

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.btn-group .button {
  background-color: #04AA6D; /* Green */
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  cursor: pointer;
  float: left;
}

.btn-group .button:hover {
  background-color: #3e8e41;
}
</style>
</head>
<body>

<h2>Button Groups</h2>

<p>Remove margins and float the buttons to create a button group:</p>

<div class="btn-group">
  <button class="button">Button</button>
  <button class="button">Button</button>
  <button class="button">Button</button>
  <button class="button">Button</button>
</div>

<p style="clear:both"><br>Remember to clear floats after, or else will this p element also float next to the buttons.</p>

</body>
</html>

Afgrænset knapgruppe



Brug egenskaben border til at oprette en knap med kant gruppe:

Eksempel

.button {
  float: left;
  border: 1px 
solid green;
}

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.btn-group .button {
  background-color: #04AA6D; /* Green */
  border: 1px solid green;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  cursor: pointer;
  float: left;
}

.btn-group .button:not(:last-child) {
  border-right: none; /* Prevent double borders */
}

.btn-group .button:hover {
  background-color: #3e8e41;
}
</style>
</head>
<body>

<h2>Bordered Button Group</h2>

<p>Add borders to create a bordered button group:</p>

<div class="btn-group">
  <button class="button">Button</button>
  <button class="button">Button</button>
  <button class="button">Button</button>
  <button class="button">Button</button>
</div>

<p style="clear:both"><br>Remember to clear floats after, or else will this p element also float next to the buttons.</p>

</body>
</html>

Lodret knapgruppe


Brug display:block i stedet for float:left til at gruppere knapperne under hinanden i stedet for side om side:

Eksempel

.button {
  display: block;
}

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.btn-group .button {
  background-color: #04AA6D; /* Green */
  border: 1px solid green;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  font-size: 16px;
  cursor: pointer;
  width: 150px;
  display: block;
}

.btn-group .button:not(:last-child) {
  border-bottom: none; /* Prevent double borders */
}

.btn-group .button:hover {
  background-color: #3e8e41;
}
</style>
</head>
<body>

<h2>Vertical Button Group</h2>

<div class="btn-group">
  <button class="button">Button</button>
  <button class="button">Button</button>
  <button class="button">Button</button>
  <button class="button">Button</button>
</div>

</body>
</html>

Knap på billede

Snow

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.container {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.container img {
  width: 100%;
  height: auto;
}

.container .btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  background-color: #f1f1f1;
  color: black;
  font-size: 16px;
  padding: 16px 30px;
  border: none;
  cursor: pointer;
  border-radius: 5px;
  text-align: center;
}

.container .btn:hover {
  background-color: black;
  color: white;
}
</style>
</head>
<body>

<h2>Button on Image</h2>

<p>Add a button on an image:</p>

<div class="container">
  <img src="img_lights.jpg" alt="Snow" style="width:100%">
  <button class="btn">Button</button>
</div>

</body>
</html>

Animerede knapper

Eksempel

Tilføj en pil ved svævning:

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  display: inline-block;
  border-radius: 4px;
  background-color: #f4511e;
  border: none;
  color: #FFFFFF;
  text-align: center;
  font-size: 28px;
  padding: 20px;
  width: 200px;
  transition: all 0.5s;
  cursor: pointer;
  margin: 5px;
}

.button span {
  cursor: pointer;
  display: inline-block;
  position: relative;
  transition: 0.5s;
}

.button span:after {
  content: '\00bb';
  position: absolute;
  opacity: 0;
  top: 0;
  right: -20px;
  transition: 0.5s;
}

.button:hover span {
  padding-right: 25px;
}

.button:hover span:after {
  opacity: 1;
  right: 0;
}
</style>
</head>
<body>

<h2>Animated Button</h2>

<button class="button" style="vertical-align:middle"><span>Hover </span></button>

</body>
</html>

Eksempel

Tilføj en "trykt" effekt ved klik:

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  display: inline-block;
  padding: 15px 25px;
  font-size: 24px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  outline: none;
  color: #fff;
  background-color: #04AA6D;
  border: none;
  border-radius: 15px;
  box-shadow: 0 9px #999;
}

.button:hover {background-color: #3e8e41}

.button:active {
  background-color: #3e8e41;
  box-shadow: 0 5px #666;
  transform: translateY(4px);
}
</style>
</head>
<body>

<h2>Animated Button - "Pressed Effect"</h2>

<button class="button">Click Me</button>

</body>
</html>

Eksempel

Fade ind, når du svæver:

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
.button {
  background-color: #f4511e;
  border: none;
  color: white;
  padding: 16px 32px;
  text-align: center;
  font-size: 16px;
  margin: 4px 2px;
  opacity: 0.6;
  transition: 0.3s;
  display: inline-block;
  text-decoration: none;
  cursor: pointer;
}

.button:hover {opacity: 1}
</style>
</head>
<body>

<h2>Animated Button - Fade in Effect</h2>

<button class="button">Hover Over Me</button>

</body>
</html>

Eksempel

Tilføj en "bølgeeffekt" ved klik:

Prøv det selv →

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  position: relative;
  background-color: #04AA6D;
  border: none;
  font-size: 28px;
  color: #FFFFFF;
  padding: 20px;
  width: 200px;
  text-align: center;
  transition-duration: 0.4s;
  text-decoration: none;
  overflow: hidden;
  cursor: pointer;
}

.button:after {
  content: "";
  background: #f1f1f1;
  display: block;
  position: absolute;
  padding-top: 300%;
  padding-left: 350%;
  margin-left: -20px !important;
  margin-top: -120%;
  opacity: 0;
  transition: all 0.8s
}

.button:active:after {
  padding: 0;
  margin: 0;
  opacity: 1;
  transition: 0s
}
</style>
</head>
<body>

<h2>Animated Button - Ripple Effect</h2>

<button class="button">Click Me</button>

</body>
</html>