This is the first example of code that explains how to build a custom form widget.
Basic state
HTML
<div class="select">
<span class="value">Cherry</span>
<ul class="optList hidden">
<li class="option">Cherry</li>
<li class="option">Lemon</li>
<li class="option">Banana</li>
<li class="option">Strawberry</li>
<li class="option">Apple</li>
</ul>
</div>
CSS
/* --------------- */
/* Required Styles */
/* --------------- */
.select {
position: relative;
display : inline-block;
}
.select.active,
.select:focus {
box-shadow: 0 0 3px 1px #227755;
outline: none;
}
.select .optList {
position: absolute;
top : 100%;
left : 0;
}
.select .optList.hidden {
max-height: 0;
visibility: hidden;
}
/* ------------ */
/* Fancy Styles */
/* ------------ */
.select {
font-size : 0.625em; /* 10px */
font-family : Verdana, Arial, sans-serif;
-moz-box-sizing : border-box;
box-sizing : border-box;
padding : 0.1em 2.5em 0.2em 0.5em; /* 1px 25px 2px 5px */
width : 10em; /* 100px */
border : 0.2em solid #000; /* 2px */
border-radius : 0.4em; /* 4px */
box-shadow : 0 0.1em 0.2em rgba(0,0,0,.45); /* 0 1px 2px */
background : #F0F0F0;
background : -webkit-linear-gradient(90deg, #E3E3E3, #fcfcfc 50%, #f0f0f0);
background : linear-gradient(0deg, #E3E3E3, #fcfcfc 50%, #f0f0f0);
}
.select .value {
display : inline-block;
width : 100%;
overflow : hidden;
white-space : nowrap;
text-overflow : ellipsis;
vertical-align: top;
}
.select:after {
content : "▼";
position: absolute;
z-index : 1;
height : 100%;
width : 2em; /* 20px */
top : 0;
right : 0;
padding-top : .1em;
-moz-box-sizing : border-box;
box-sizing : border-box;
text-align : center;
border-left : .2em solid #000;
border-radius: 0 .1em .1em 0;
background-color : #000;
color : #FFF;
}
.select .optList {
z-index : 2;
list-style: none;
margin : 0;
padding: 0;
background: #f0f0f0;
border: .2em solid #000;
border-top-width : .1em;
border-radius: 0 0 .4em .4em;
box-shadow: 0 .2em .4em rgba(0,0,0,.4);
-moz-box-sizing : border-box;
box-sizing : border-box;
min-width : 100%;
max-height: 10em; /* 100px */
overflow-y: auto;
overflow-x: hidden;
}
.select .option {
padding: .2em .3em;
}
.select .highlight {
background: #000;
color: #FFFFFF;
}
Result for basic state
Active state
HTML
<div class="select active">
<span class="value">Cherry</span>
<ul class="optList hidden">
<li class="option">Cherry</li>
<li class="option">Lemon</li>
<li class="option">Banana</li>
<li class="option">Strawberry</li>
<li class="option">Apple</li>
</ul>
</div>
CSS
/* --------------- */
/* Required Styles */
/* --------------- */
.select {
position: relative;
display : inline-block;
}
.select.active,
.select:focus {
box-shadow: 0 0 3px 1px #227755;
outline: none;
}
.select .optList {
position: absolute;
top : 100%;
left : 0;
}
.select .optList.hidden {
max-height: 0;
visibility: hidden;
}
/* ------------ */
/* Fancy Styles */
/* ------------ */
.select {
font-size : 0.625em; /* 10px */
font-family : Verdana, Arial, sans-serif;
-moz-box-sizing : border-box;
box-sizing : border-box;
padding : 0.1em 2.5em 0.2em 0.5em; /* 1px 25px 2px 5px */
width : 10em; /* 100px */
border : 0.2em solid #000; /* 2px */
border-radius : 0.4em; /* 4px */
box-shadow : 0 0.1em 0.2em rgba(0,0,0,.45); /* 0 1px 2px */
background : #F0F0F0;
background : -webkit-linear-gradient(90deg, #E3E3E3, #fcfcfc 50%, #f0f0f0);
background : linear-gradient(0deg, #E3E3E3, #fcfcfc 50%, #f0f0f0);
}
.select .value {
display : inline-block;
width : 100%;
overflow : hidden;
white-space : nowrap;
text-overflow : ellipsis;
vertical-align: top;
}
.select:after {
content : "▼";
position: absolute;
z-index : 1;
height : 100%;
width : 2em; /* 20px */
top : 0;
right : 0;
padding-top : .1em;
-moz-box-sizing : border-box;
box-sizing : border-box;
text-align : center;
border-left : .2em solid #000;
border-radius: 0 .1em .1em 0;
background-color : #000;
color : #FFF;
}
.select .optList {
z-index : 2;
list-style: none;
margin : 0;
padding: 0;
background: #f0f0f0;
border: .2em solid #000;
border-top-width : .1em;
border-radius: 0 0 .4em .4em;
box-shadow: 0 .2em .4em rgba(0,0,0,.4);
-moz-box-sizing : border-box;
box-sizing : border-box;
min-width : 100%;
max-height: 10em; /* 100px */
overflow-y: auto;
overflow-x: hidden;
}
.select .option {
padding: .2em .3em;
}
.select .highlight {
background: #000;
color: #FFFFFF;
}
Result for active state
Open state
HTML
<div class="select active">
<span class="value">Cherry</span>
<ul class="optList">
<li class="option highlight">Cherry</li>
<li class="option">Lemon</li>
<li class="option">Banana</li>
<li class="option">Strawberry</li>
<li class="option">Apple</li>
</ul>
</div>
CSS
/* --------------- */
/* Required Styles */
/* --------------- */
.select {
position: relative;
display : inline-block;
}
.select.active,
.select:focus {
box-shadow: 0 0 3px 1px #227755;
outline: none;
}
.select .optList {
position: absolute;
top : 100%;
left : 0;
}
.select .optList.hidden {
max-height: 0;
visibility: hidden;
}
/* ------------ */
/* Fancy Styles */
/* ------------ */
.select {
font-size : 0.625em; /* 10px */
font-family : Verdana, Arial, sans-serif;
-moz-box-sizing : border-box;
box-sizing : border-box;
padding : 0.1em 2.5em 0.2em 0.5em; /* 1px 25px 2px 5px */
width : 10em; /* 100px */
border : 0.2em solid #000; /* 2px */
border-radius : 0.4em; /* 4px */
box-shadow : 0 0.1em 0.2em rgba(0, 0, 0, .45); /* 0 1px 2px */
background : #F0F0F0;
background : -webkit-linear-gradient(90deg, #E3E3E3, #fcfcfc 50%, #f0f0f0);
background : linear-gradient(0deg, #E3E3E3, #fcfcfc 50%, #f0f0f0);
}
.select .value {
display : inline-block;
width : 100%;
overflow : hidden;
white-space : nowrap;
text-overflow : ellipsis;
vertical-align: top;
}
.select:after {
content : "▼";
position: absolute;
z-index : 1;
height : 100%;
width : 2em; /* 20px */
top : 0;
right : 0;
padding-top : .1em;
-moz-box-sizing : border-box;
box-sizing : border-box;
text-align : center;
border-left : .2em solid #000;
border-radius: 0 .1em .1em 0;
background-color : #000;
color : #FFF;
}
.select .optList {
z-index : 2;
list-style: none;
margin : 0;
padding: 0;
background: #f0f0f0;
border: .2em solid #000;
border-top-width : .1em;
border-radius: 0 0 .4em .4em;
box-shadow: 0 .2em .4em rgba(0,0,0,.4);
-moz-box-sizing : border-box;
box-sizing : border-box;
min-width : 100%;
max-height: 10em; /* 100px */
overflow-y: auto;
overflow-x: hidden;
}
.select .option {
padding: .2em .3em;
}
.select .highlight {
background: #000;
color: #FFF;
}