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

h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-weight: 500;
  line-height: 1.2;
}

input,
button,
select {
    margin: 0;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

.input-group > .form-control {
  -ms-flex: 1 1 0%;
  flex: 1 1 0%;
  min-width: 0;
  margin-bottom: 0;
  background-color: #fff;
}

.input-group {
  position: relative;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  -ms-flex-align: stretch;
  align-items: stretch;
  width: 100%;
}

.input-group-append {
  margin-left: -1px;
  display: -ms-flexbox;
  display: flex;
}

.input-group-append .btn {
  position: relative;
  z-index: 2;
  cursor: pointer;
}

.btn {
  border: 1px solid transparent;
}

.btn:focus {
  outline: 0;
}