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

.checkmark {
position: absolute;
top: -2px;
left: 0;
height: 25px;
width: 25px;
background-color: #fff;
border: 1px solid #1e345d;
}

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

.container input:checked ~ .checkmark {
background-color: #1e345d;
}

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

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

.container .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);
}