index.css

html {
    margin: 0;
    padding: 0;
}
h1 {

    font-family: 'Handlee', cursive;
    font-size: 30pt;
    color: #3fb6b2;
    text-align: center;
    padding: 18px 0 18px 0;
    margin: 0 0 10px 0;
}
form {
    text-align: center;
    margin-top: 0;
}
.submit {
    background-color: #3fb6b2;
    padding: 12px 45px;
    border-radius: 5px;
    cursor: pointer;
    color: #ffffff;
    border: none;
    outline: none;
    margin: 0;
    font-weight: bold;
}
.submit:hover {
    background-color: #43a09d;
}
.logout {
    background-color: #3fb6b2;
    padding: 120px 45px;
    border-radius: 5px;
    cursor: pointer;
    color: #ffffff;
    border: none;
    outline: none;
    margin: 0;
    font-weight: bold;
}
.logout:hover {
    background-color: #43a09d;
}
input, textarea {
    margin-bottom: 10px;
    font-size: 11pt;
    padding: 15px 10px 10px;
    border: 1px solid #cecece;
    background-color: #efefef;
    color: #787575;
    border-radius: 5px;
    width: 70%;
    outline: none;
}
.container {
  display: block;
  position: relative;
  padding-left: 35px;
  margin-bottom: 12px;
  cursor: pointer;
  font-size: 22px;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

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

/* Create a custom checkbox */
.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 25px;
  width: 25px;
  background-color: #eee;
}

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

/* When the checkbox is checked, add a blue background */
.container input:checked ~ .checkmark {
  background-color: #3fb6b2;
}

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

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

/* Style the checkmark/indicator */
.container .checkmark:after {
  left: 9px;
  top: 5px;
  width: 5px;
  height: 10px;
  border: solid white;
  -webkit-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  border-width: 0 3px 3px 0;
  transform: rotate(45deg);
}
input.largerCheckbox
{
width: 30px;
height: 30px;
}