.css

* {
  font-family: "Source Sans Pro", "Times New Roman", Times;
  box-sizing: border-box;
  font-size: 15px;
  text-align: center;
  vertical-align: center;
  overflow: hidden;    
  border-radius: 12px;      
}

body, div {
 background-color: #252926; /* Grey */
}


input[type=number], select, textarea {
  width: 100%;
  padding: 12px;
  border: 2px solid #FAED26; /* Yellow */
  width: 50%;
  resize: vertical;
}

label {
  padding: 12px 12px 12px 0;
  display: inline-block;
  color:white;
}

button {  
  font-size: 1.2em;
  background-color: #4B14E2; /* Purple */
  color: white;
  cursor: pointer;
  padding: 1em 0.8em 1em 0.8em;
  margin: 0.2em;
  border-color:
}

button:hover {
  color: yellow;
  border-color: #FAED26;
}

.col-l {
  float: left;
  width: 25%;
  margin-top: 6px;
}

.col-75 {
  float: left;
  width: 75%;
  margin-top: 6px;
}

/* Clear floats after the columns */
.row:after {
  content: "";
  display: table;
  clear: both;
}

/* Responsive layout - when the screen is less than 600px wide, the two columns stack on top of each other instead of next to each other */
@media screen and (max-width: 600px) {
  .col-l, .col-75, input[type=submit], label {
    width: 100%;
    margin-top: 0;
    text-align:center;
  }
}