/* some style */
<code>
@media screen and (max-width: 481px){
svg {overflow: visible}
body {background: #333; color: #ccc; font-family: Helvetica, Arial, sans-serif; overflow: hidden; line-height: 20px; font-size: 13px}
#wrapper {width: 200px; float: left; margin: 0 20px 0 10px}
a {color: lime}
form {width: 60%; display: inline-block}
.form-input {
  background: #222; color: #ccc;
  border: 2px solid #444; border-radius: 5px;
  padding: 10px 15px; width: 38%; width: calc(40% - 24px); margin: 0 10px 10px 0; display: inline-block
}
textarea.form-input { width: 80% }
input[type="checkbox"] {vertical-align: middle}

/* some colors */
b, strong, h1 { color: #fff }
.text-olive {color: #9C27B0; } 
.text-indigo { color: #673AB7; } 
.text-green { color: #4CAF50; } 
.text-red { color: #e91b1f; } 
.text-yellow { color: #ffd626; } 
.text-blue { color: #2196F3; }
.text-pink { color: #E91E63; } 
.text-orange { color: #FF5722; }
.text-lime { color: #CDDC39; }
.text-teal { color: #009688; }

/* popover */
.fade {
  opacity: 0;
  -webkit-transition: opacity 0.15s linear;
  -o-transition: opacity 0.15s linear;
  transition: opacity 0.15s linear;
}
.fade.in {
  opacity: 1;
}
.popover {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1060;
  display: none;
  max-width: 276px;
  padding: 1px;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-style: normal;
  font-weight: normal;
  letter-spacing: normal;
  line-break: auto;
  line-height: 1.42857143;
  text-align: left;
  text-align: start;
  text-decoration: none;
  text-shadow: none;
  text-transform: none;
  white-space: normal;
  word-break: normal;
  word-spacing: normal;
  word-wrap: normal;
  font-size: 14px;
  background-color: #ffffff;
  -webkit-background-clip: padding-box;
          background-clip: padding-box;
  border: 1px solid #cccccc;
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 6px;
  color: #333
}
.popover b,
.popover strong {color: #111}
.popover.top {
  margin-top: -10px;
}
.popover.right {
  margin-left: 10px;
}
.popover.bottom {
  margin-top: 10px;
}
.popover.left {
  margin-left: -10px;
}
.popover-title {
  margin: 0;
  padding: 8px 14px;
  font-size: 14px;
  background-color: #f7f7f7;
  border-bottom: 1px solid #ebebeb;
  border-radius: 5px 5px 0 0;
}
.popover-content {
  padding: 9px 14px;
}
.popover > .arrow,
.popover > .arrow:after {
  position: absolute;
  display: block;
  width: 0;
  height: 0;
  border-color: transparent;
  border-style: solid;
}
.popover > .arrow {
  border-width: 11px;
}
.popover > .arrow:after {
  border-width: 10px;
  content: "";
}
.popover.top > .arrow {
  left: 50%;
  margin-left: -11px;
  border-bottom-width: 0;
  border-top-color: #999999;
  border-top-color: rgba(0, 0, 0, 0.25);
  bottom: -11px;
}
.popover.top > .arrow:after {
  content: " ";
  bottom: 1px;
  margin-left: -10px;
  border-bottom-width: 0;
  border-top-color: #ffffff;
}
.popover.right > .arrow {
  top: 50%;
  left: -11px;
  margin-top: -11px;
  border-left-width: 0;
  border-right-color: #999999;
  border-right-color: rgba(0, 0, 0, 0.25);
}
.popover.right > .arrow:after {
  content: " ";
  left: 1px;
  bottom: -10px;
  border-left-width: 0;
  border-right-color: #ffffff;
}
.popover.bottom > .arrow {
  left: 50%;
  margin-left: -11px;
  border-top-width: 0;
  border-bottom-color: #999999;
  border-bottom-color: rgba(0, 0, 0, 0.25);
  top: -11px;
}
.popover.bottom > .arrow:after {
  content: " ";
  top: 1px;
  margin-left: -10px;
  border-top-width: 0;
  border-bottom-color: #ffffff;
}
.popover.left > .arrow {
  top: 50%;
  right: -11px;
  margin-top: -11px;
  border-right-width: 0;
  border-left-color: #999999;
  border-left-color: rgba(0, 0, 0, 0.25);
}
.popover.left > .arrow:after {
  content: " ";
  right: 1px;
  border-right-width: 0;
  border-left-color: #ffffff;
  bottom: -10px;
}
}
</code>