:root {
    --main-size: 20px;
    --border-color: #1B1C24;
    --border-color-hover: #239AFF;
    --border-color-checked: #239AFF;
    --background-color-checked: #239AFF;
}

.styled-checkbox {

}

.styled-checkbox input[type="checkbox"] {
    display:none;
}
.styled-checkbox input[type="checkbox"] + label {
    position: relative;
    line-height: 1.3;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    cursor: pointer;
    display: flex;
    margin-bottom: 20px;
}
.styled-checkbox input[type="checkbox"] + label::before {
    box-sizing: border-box;
    display: block;
    content: '';
    width: var(--main-size);
    min-width: var(--main-size);
    height: var(--main-size);
    min-height: var(--main-size);
    border: 2px solid var(--border-color);
    border-radius: 2px;
    background-color: #fff;
    margin-right: 15px;
}
.styled-checkbox input[type="checkbox"]:hover + label::before{
    border-color: var(--border-color-hover);
}
.styled-checkbox input[type="checkbox"]:checked + label::before {
    border-color: var(--border-color-checked);
    background-color: var(--background-color-checked);
}


.styled-checkbox input[type="checkbox"] + label::after {
    position: absolute;
    top: 10px;
    left: 4px;
    width: 10px;
    height: 7px;
    border-radius: 2px;
    border: 0.2em solid #fff;
    background-color: transparent;
    border-top: none;
    border-right: none;
    display: none;
    content: '';
    transform-origin: 0 0;
    transform: rotate(-45deg);
    box-sizing: border-box;
}
.styled-checkbox input[type="checkbox"]:checked + label::after {
    display: block;
}