CSS outline width not working

问题

I am trying to set outline width of the input element on focus. Outline width stays the same (like it is default setting which can not be changed), no matter of my setting.

Here is example from code pen

And here is part from css where I am trying to set outline-width on focus:

input:focus {
  outline-width: 0.1px;
  outline-color: #725b44;  
}

EDIT:

I've just forgotten to include line style (solid, dotted...). Now it works. One thing is still strange to me. Why is outline inside element? Isnt' the outline defined as 'a line that is drawn around elements (outside the borders) to make the element "stand out".'

Here from my example outline looks like this. I thought it's going to be around element, but it's inside:

回答1:

Add outline-style: solid to your css.

Example for the behavior:

input {
  font-size: 22px;
  padding: 5px 3px;
  color: #666;
}

input.with-outline-style:focus {
  outline-width: 3px;
  outline-style: solid;
  outline-color: #725b44;
  /* You could also use the shorthand: */
  /* outline: 3px solid #666; */
  /*       width style color */
}

input.without-outline-style:focus {
  outline-width: 3px;
  outline-color: #725b44;
}

body {
  background-color: #fd9;
}

div {
  padding: 5px 10px;
}

<div>
  <input type="text" class="with-outline-style" value="outline-style set to solid" />
</div>

<div>
  <input type="text" class="without-outline-style" value="outline-style not set" />
</div>

Update

The outline-width setting doesn't work without specifying outline-style: if no outline style is set, the browser will render the outline in its default style (which could be anything, such as a dotted rectangle in IE, a shaded rectangle in Chrome, or even nothing).

回答2:

Use outline-style

input:focus {
  outline-width: 0.1px;
  outline-color: #725b44;  
  outline-style: dotted;
}

回答3:

Only if you specify outline-style the outline-width will take effect. Please check and let me know your feedback. Thanks!

snippet below:

.divMain {
  height: 100vh;
  width: 100vw;
  border: 0px solid black;
}
.divLogin {
  position: absolute;
  left: 20%;
  top: 5%;
  width: 300px;
  height: 600px;
  border: 1px solid #CF6B08;
  border-radius: 3px;
}
#divLogin {
  background: #FFCC99;
  /* For browsers that do not support gradients */
  background: -webkit-linear-gradient(#FAC28A, #FFCC99);
  /* For Safari 5.1 to 6.0 */
  background: -o-linear-gradient(#FAC28A, #FFCC99);
  /* For Opera 11.1 to 12.0 */
  background: -moz-linear-gradient(#FAC28A, #FFCC99);
  /* For Firefox 3.6 to 15 */
  background: linear-gradient(#FAC28A, #FFCC99);
  /* Standard syntax */
}
.spanTitle {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: 20px;
  color: #003399;
  font-weight: bold;
}
.inputFirst {
  position: absolute;
  top: 50px;
  margin-left: 5px;
  width: calc(100% - 10px);
  height: 30px;
}
.divWarningInputFirst {
  position: absolute;
  width: calc(100% - 10px);
  height: 30px;
  top: 88px;
  margin-left: 5px;
  border: 0px solid black;
  background-color: #fcdcbb;
  color: #ff0000;
  font-weight: bold;
  padding-top: 5px;
  padding-left: 5px;
}
.divWarningInputFirst:after {
  content: "";
  position: absolute;
  top: -5px;
  left: 8px;
  border-style: solid;
  border-width: 0 5px 6px;
  border-color: #fcdcbb transparent;
  display: block;
  width: 0;
  z-index: 1;
}
input:focus {
  outline-width: 3px;
  outline-style: solid;
  outline-color: #725b44;
}
input {
  border-color: transparent;
  padding-left: 3px;
  box-sizing: border-box;
}

<div id="divMain" class="divMain">

  <div id="divLogin" class="divLogin">

    <span id="spanTitle" class="spanTitle">Login</span>

    <input type="text" id="inputFirst" class="inputFirst" placeholder="input first">



    <div id="divWarningInputFirst" class="divWarningInputFirst">Please enter input first</div>

  </div>



</div>

回答4:

Try

outline: 3px solid #725b44;

outline-width:3px;
outline-color:#725b44;
outline-style:solid;

.divMain {
  height: 100vh;
  width: 100vw;
  border: 0px solid black;
}
.divLogin {
  position: absolute;
  left: 20%;
  top: 5%;
  width: 300px;
  height: 600px;
  border: 1px solid #CF6B08;
  border-radius: 3px;
}
#divLogin {
  background: #FFCC99;
  /* For browsers that do not support gradients */
  background: -webkit-linear-gradient(#FAC28A, #FFCC99);
  /* For Safari 5.1 to 6.0 */
  background: -o-linear-gradient(#FAC28A, #FFCC99);
  /* For Opera 11.1 to 12.0 */
  background: -moz-linear-gradient(#FAC28A, #FFCC99);
  /* For Firefox 3.6 to 15 */
  background: linear-gradient(#FAC28A, #FFCC99);
  /* Standard syntax */
}
.spanTitle {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: 20px;
  color: #003399;
  font-weight: bold;
}
.inputFirst {
  position: absolute;
  top: 50px;
  margin-left: 5px;
  width: calc(100% - 10px);
  height: 30px;
}
.divWarningInputFirst {
  position: absolute;
  width: calc(100% - 10px);
  height: 30px;
  top: 88px;
  margin-left: 5px;
  border: 0px solid black;
  background-color: #fcdcbb;
  color: #ff0000;
  font-weight: bold;
  padding-top: 5px;
  padding-left: 5px;
}
.divWarningInputFirst:after {
  content: "";
  position: absolute;
  top: -5px;
  left: 8px;
  border-style: solid;
  border-width: 0 5px 6px;
  border-color: #fcdcbb transparent;
  display: block;
  width: 0;
  z-index: 1;
}
input:focus {
  outline: 3px solid #725b44;

}
input {
  border-color: transparent;
  padding-left: 3px;
  box-sizing: border-box;
}

<div id="divMain" class="divMain">
  
  <div id="divLogin" class="divLogin">
    
    <span id="spanTitle" class="spanTitle">Login</span>
    
    <input type="text" id="inputFirst" class="inputFirst" placeholder="input first">
    
    
    
    <div id="divWarningInputFirst" class="divWarningInputFirst">Please enter input first</div>
    
  </div>
  
  
  
</div>

This might help you!

回答5:

You should add 1px instead of 0.1px with outline-style

input:focus {
  outline:1px solid #725b44;  
}

来源：https://stackoverflow.com/questions/38874757/css-outline-width-not-working

标签

html

css

css-selectors

css-position

pseudo-element