.container {
  max-width: 80ch;
  margin: auto;
}
body {
  font-family: sans-serif;
}
#data {
  border-top: 1px solid #444;
  border-left: 1px solid #444;
  border-right: 1px solid #444;
  padding: 1em;
  background-color: #F4F4F4;
  border-radius: 10px 10px 0px 0px;
}
#info {
  background-color: #87ceeb;
  padding: .5em;
  text-align: center;
  border-radius: 5px;
}
#data input {
  font-size: 1.2em;
  width: 100%;
  border: 1px solid #444;
  display: block;
  margin: .5em 0em .5em 0em;
}
#calculate {
  background-color: steelblue;
  color: #FFF;
  font-size: 1.25em;
  padding: .25em;
  font-weight: bolder;
  border-radius: 0px 0px 10px 10px;
  width: 100%;
  margin: 0;
  border: 0;
  cursor: pointer;
}
#results {
  background-color: #ccd;
}
#message {
padding: 1em;
font-size: 1.25em;
}
.twitter-share-button {
                background-color: #1c95e0;
                color: #fff;
            }
            #share {
                border-top: 1px solid #444;
                margin-top: .5em;
                padding: 1em;
            }
            #share a {
                text-align: center;
                border-radius: 4px;
                padding: 4px;
                text-decoration: none;
            }
            #share a:not(:last-child) {
                margin-right: 1em;
            }
            #copy {
                cursor: pointer;
            }