body {
  margin-left: 20px;
}
.zdog_list {
  list-style-type:square;
}
.slidecontainer {
  width: 10%;
}
.slidecontainer label {
  display: inline-block;
}
.slider {
  -webkit-appearance: none;
  width: 100%;
  height: 25px;
  background: #d3d3d3;
  outline: none;
  opacity: 0.7;
  -webkit-transition: .2s;
  transition: opacity .2s;
}

.slider:hover {
  opacity: 1;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 25px;
  height: 25px;
  background: #4CAF50;
  cursor: pointer;
}

.slider::-moz-range-thumb {
  width: 25px;
  height: 25px;
  background: #4CAF50;
  cursor: pointer;
}

#options {
  margin-left: 10px;
}

.button {
  background-color: #e7e7e7; /* Gray */
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  border-radius: 3px;
}

.button-green {background-color: #4CAF50;} /* Green */
.button-blue {background-color: #008CBA;} /* Blue */
.button-red {background-color: #f44336;} /* Red */
.button-gray {background-color: #e7e7e7; color: black;} /* Gray */
.button-black {background-color: #555555;} /* Black */

.button:hover {
  box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24), 0 17px 50px 0 rgba(0,0,0,0.19);
}