*, *:before, *:after {
  -moz-box-sizing: border-box; -webkit-box-sizing: border-box; box-sizing: border-box;
 }

/* MQBE */
/* https://github.com/carloscabo/MQBE */
@media all and (min-width:1px) {
    body:after {
    content: 'desktop';
    display:none;
  }
}

@media only screen and (max-width: 1024px) {
  body {
    background-color: #fafafa;
  }
  body:after {
    content: 'tablet';
    display:none;
  }
}

/* Example styles */

body {
  padding: 20px;
}

div.box {
  width: 350px;
  padding: 20px;
  border: 1px solid #ccc;
  float: left;
  margin: 0 20px 20px 0;
}

div.wide {
  width: 100%;
}

ul {
  padding-left: 20px;
}

li.active > a,
li.selected > a {
  color: red;
}

.u2s-wrapper {
  position: relative;
  background: pink url(icon-arrow-down-24.png) right center no-repeat;
  padding: 4px 24px 4px 4px;
  cursor: pointer;
}

#my-custom-wrapper {
  position: relative;
  background: cyan url(icon-arrow-down-24.png) right center no-repeat;
  padding: 8px 24px 8px 8px;
  cursor: pointer;
}

#my-custom-wrapper select,
.u2s-wrapper select {
  position: absolute;
  width: 100%;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  opacity: 0;
}