* {
    box-sizing: border-box;
}

body {

    font-family: 'Roboto', sans-serif;
}

.body_div {
    margin-top: 100px;
}

.active {
    background-color: rgba(31, 66, 195, 0.3);
}

.buttons {
    float: left;
    margin-right: 5px;
    border: none;
    color: white;
    padding: 15px 32px;
    text-align: center;
    display: inline-block;
    font-size: 16px;
    cursor: pointer;
}

#generate {
    background-color: #f53978;
    margin-top: 25px;
}

#solve {
    background-color: #f53978;
    font-size: 16px;
    margin-top: 25px;
}

#help {
    width: 40px;
    background-color: #f53978;
    font-size: 16px;
    margin-top: 25px;
}

.column {
    float: left;
    width: 50%;
    padding-left: 69px;
    padding-right: 69px;
    padding-top: 20px;
}

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

article {
    position: relative;
    width: 100%;
    height: 30px;
    margin: 5px;
    float: left;
    border: 2px solid #f53978;
    box-sizing: border-box;
    color: white;
}

article div {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    line-height: 25px;
    transition: .5s ease;
}

article input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 30px;
    opacity: 0;
    cursor: pointer;
}

input[type=checkbox]:checked ~ div {
    background-color: #f53978;
}

.title_text {
    font-size: 3rem;
    color: #ffffff;
    letter-spacing: normal;
    font-weight: 700;
    text-transform: none;
    text-align: center;
}

.title_sub_text {
    font-size: 1.25rem;
    color: #ffffff;
    letter-spacing: normal;
    font-weight: 700;
    text-transform: none;
    text-align: center;
}

/* The container */
.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;
    color: white;
}

/* Hide the browser's default radio button */
.container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;

}

/* Create a custom radio button */
.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 25px;
    width: 25px;
    background-color: #eee;
    border-radius: 50%;
}

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

/* When the radio button is checked, add a blue background */
.container input:checked ~ .checkmark {
    background-color: #f53978;
}

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

/* Show the indicator (dot/circle) when checked */
.container input:checked ~ .checkmark:after {
    display: block;
}

/* Style the indicator (dot/circle) */
.container .checkmark:after {
    top: 9px;
    left: 9px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
}