How to put background-color only a section of a select? CSS

Question

I have this sample:

link

CODE HTML:

<div class="select-style">
  <select>
    <option value="volvo">Volvo</option>
    <option value="saab">Saab</option>
    <option value="mercedes">Mercedes</option>
    <option value="audi">Audi</option>
  </select>
</div>

CODE CSS:

.select-style {
    padding: 0;
    margin: 0;
    border: 1px solid #ccc;
    width: 120px;
    border-radius: 3px;
    overflow: hidden;
    background-color: #fff;
    background: #fff url("http://www.scottgood.com/jsg/blog.nsf/images/arrowdown.gif") no-repeat 90% 50%;
}

.select-style select {
    padding: 5px 8px;
    width: 130%;
    border: none;
    box-shadow: none;
    background-color: transparent;
    background-image: none;
    -webkit-appearance: none;
       -moz-appearance: none;
            appearance: none;
}

.select-style select:focus {
    outline: none;
}

I put a picture to understand better what I want to do.

How can I do this on my structure?

Does the current structure? Or have another structure created HTML?

Thanks in advance!

Answer 1

You can make use of linear-gradient combined with background-image.

1. The background-image property allows combination of url() and linear-gradient() so you may try separating the values. Same for the background-position as we are controlling the url image position with 95px value while the linear gradient is undisturbed with center center.
2. Using linear-gradient, The first 70% is filled with background color white while the other 30% will be light gray colored in the example.
3. Create a border using a small fraction of the percentage value i.e. 70% gray to 71% gray in the linear gradient.

.select-style {
  background-image: url("http://www.scottgood.com/jsg/blog.nsf/images/arrowdown.gif"), linear-gradient(to right, white 70%, gray 70%, gray 71%, lightgray 71%, lightgray 100%);
  background-position: 95px center, center center;
  background-repeat: no-repeat;
  border: 1px solid #ccc;
  border-radius: 3px;
  margin: 0;
  overflow: hidden;
  padding: 0;
  width: 120px;
}
.select-style select {
  padding: 5px 8px;
  width: 130%;
  border: none;
  box-shadow: none;
  background-color: transparent;
  background-image: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}
.select-style select:focus {
  outline: none;
}

<div class="select-style">
  <select>
    <option value="volvo">Volvo</option>
    <option value="saab">Saab</option>
    <option value="mercedes">Mercedes</option>
    <option value="audi">Audi</option>
  </select>
</div>