* {
  box-sizing: border-box;
}

body {
  font-family: sans-serif;
}
label {
  font-size: 1.4rem;
  display: inline-block;
  margin-bottom: 40px;
}

input {
  width: 300px;
  text-align: center;
  padding: 10px 40px;
  font-size: 16px;
}
.mobile {
  background-color: skyblue;
}
.mobile, .found, .tryout {
  border: 1px solid gray;
  box-shadow: 0px 0px 16px rgba(0,0,0,0.2);
  width: 400px;
  margin: 20px auto;
  padding: 40px;
  text-align: center;
}
.tryout {
  padding: 10px;
  color: gray;
}
.found {
  padding: 5px;
  min-height: 4rem;
  background-color: yellowgreen;
}
.found span {
  font-weight: bold;
  color: black;
}