index.css

body {
    font-family: Karla;
    margin: 0;
    background-color: #1F2937;
    color: #fff;
}

#container{
    margin-left: 5%;
}

#name-container{
    font-weight: bold;
    font-size: 40px;
}

#name-container span{
    color: #10B981;
}

#describe-container{
    color: #D5D4D8;
    margin-top: -1em;
    font-size: 20px;
}

#main-btn{
    font-size: 16px;
    background-color: #10B981;
    color: #fff;
    border: 0px;
    border-radius: 5px;
    height: 2em;
    width: 12em;
    margin-top: 1.5em;
}

#main-container hr {
    position: absolute;
    width: 90%;
    margin-top: 2em;
    border: 1px solid #2F3E53;
    display: flex;
}

#generate-password{
    display: flex;
    flex-direction: row;
    justify-content: space-around;
}

.password{
    background-color: #273549;
    color: #55F991;
    width: 15em;
    height: 3em;
    margin-top: 5em;
    margin-right: 5%;
    border-radius: 5px;
}

.password p {
    text-align: center;
    font-size: 16px;
}

#main-action{
    margin-right: 5%;
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    align-items: center;
}

#main-action label{
    margin-top: 1em;
}

#main-action p{
    margin-top: 2em;
}

.container {
  display: block;
  position: relative;
  padding-left: 25px;
  cursor: pointer;
  font-size: 16px;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 15px;
  width: 15px;
  background-color: #eee;
  border-radius: 50%;
}

.container:hover input ~ .checkmark {
  background-color: #ccc;
}

.container input:checked ~ .checkmark {
  background-color: #10B981;
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

.container input:checked ~ .checkmark:after {
  display: block;
}

.container .checkmark:after {
 	top: 5px;
	left: 5px;
	width: 5px;
	height: 5px;
	border-radius: 50%;
	background: white;
}