styles.css

html {
  box-sizing: border-box;
}

*, *:before, *:after {
  box-sizing: inherit;
}

.display-block {
  display: block;
}

.font-size-1rem {
  font-size: 1rem;
}

.margin-bottom-8px {
  margin-bottom: 8px;
}

.margin-top-12px {
  margin-top: 12px;
}

.width-small {
  width: 126px;
}

.height-small {
  height: 21px;
}

.width-medium {
  width: 160px;
}

.float-right{
  float: right;
}

.border-red {
  border: 1px solid red;
}

.border {
  border: 1px solid rgb(182, 180, 180);
}

.border-radius {
  border-radius: 3px;
}

input {
  border: none;
}

input:focus,
select:focus,
textarea:focus
  {
    outline: none;
}

button {
  display: inline-block;
  vertical-align: middle;
  border: none;
  border-radius: 4px;
  height: 21px; 
  color: #fff;
  background-color: #004ea1;
  border-color: #0062cc;
  -webkit-transform: perspective(1px) translateZ(0);
  transform: perspective(1px) translateZ(0);
  box-shadow: 0 0 1px rgba(0, 0, 0, 0);
  overflow: hidden;
  -webkit-transition-duration: 0.3s;
  transition-duration: 0.3s;
  -webkit-transition-property: color, background-color;
  transition-property: color, background-color;
}
button:hover {
  color: #fff;
  background-color: #007bff;
  border-color: #007bff;
}