styles.css

body {
  width: 700px;
  margin: 0 auto;
  font-family: Lato, sans-serif;
}

textarea {
  margin-bottom: 15px;
  width: 700px;
  font-size: 1em;
  padding-left: 20px;
  padding-top: 10px;
  font-family: inherit;
  border-color: #808080;
  border-radius: 3px;
  outline: none;
  resize: vertical;
}

h1 {
  padding: 0.5em 0;
  text-align: center;
}

input {
  vertical-align: middle; 
  text-align: left;
}

textarea {
  line-height: 1.6;
}

#output textarea {
  border-radius: 0px 0px 5px 5px;
  border-top: none;
}

select {  
  margin-left: 10px;
  cursor: pointer;
  padding: 8px 10px;
  width: 160px;
  height: 37px;
  background-color: transparent;
  border: 1px solid #00a191;
  font-family: inherit;
  font-size: 0.9em;
  border-radius: 3px;
  
}

.button {  
  padding: 10px 15px;
  width: 103.5%;
  background-color: #c2183a;
  border: none;
  text-align: center;  
  margin-right: 0px;
  margin-top: 10px;
  color: white;
  font-family: inherit;
  font-size: 1em;
  border-radius: 5px 5px 0px 0px;
  outline: none;

}

.button:hover{
  background: #9b132e;
}

.option {
  display: block;
  position: relative;
  padding-left: 20px;
  margin-left: 15px;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}


/* Hide the browser's default checkbox */
.option input {
  position: absolute;
  opacity: 0;
  height: 0;
  width: 0;  
}


/* Create a custom checkbox */
.checkmark {
  position: absolute;
  top: -4px;
  left: -15px;
  height: 25px;
  width: 25px;
  background-color: #eee;
}

/* On mouse-over, add a grey background color */
.option:hover input ~ .checkmark {
  background-color: #ccc;
}

/* When the checkbox is checked, add background */
.option input:checked ~ .checkmark {
  background-color: #c2183a;
}

/* Create the checkmark/indicator (hidden when not checked) */
.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

/* Show the checkmark when checked */
.option input:checked ~ .checkmark:after {
  display: block;
}

/* Style the checkmark/indicator */
.option .checkmark:after {
  left: 9px;
  top: 5px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 3px 3px 0;
  -webkit-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  transform: rotate(45deg);
}

#main {
  padding-left: 20px;
}

.git {
  padding-bottom: 30px;
  text-decoration: none; 
  color: black;
}

.git:hover {
  color: dark-gray; 
  font-weight: bold;
}