.hidden {
    display: none;
}

/* Content style. */

.content {
    margin-top: 100px;
}

.content .bg-circles {
    position: relative;
    margin: 0 auto;
    width: fit-content;
    height: fit-content;
    background-image: url(../images/circles.png);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

.content .bg-circles .select-country {
    width: 60vh;
    height: 60vh;
    display: table-cell;
    vertical-align: middle;
}

.content .bg-circles .select-country .select-box {
    position: relative;
    display: block;
    width: 300px;
    margin: 0 auto;
    font-size: 18px;
    color: #60666d;
}

.content .bg-circles .select-country .select-box .select-box-label {
    margin-bottom: 10px;
    font-size: 16px;
    font-weight: 600;
}

.content .bg-circles .select-country .select-box .select-box-current {
    position: relative;
    cursor: pointer;
    outline: none;
    border-radius: 50px;
}

.content .bg-circles .select-country .select-box .select-box-icon {
    position: absolute;
    top: 50%;
    right: 15px;
    transform: translateY(-50%);
    width: 20px;
    opacity: 0.3;
    transition: 0.2s ease;
}

.content .bg-circles .select-country .select-box .select-box-current .select-box-icon-rotate {
    transform: translateY(-50%) rotate(180deg);
}

.content .bg-circles .select-country .select-box .select-box-value {
    display: flex;
}

.content .bg-circles .select-country .select-box .select-box-value-input {
    display: block;
    width: 100%;
    height: 50px;
    text-indent: 20px;
    margin: 0;
    font-size: 16px;
    color: #00000080;
    background-color: #F4F3F5;
    border-radius: 50px;
    outline: none;
    border: none;
}

.content .bg-circles .select-country .select-box .select-box-list {
    position: absolute;
    width: 100%;
    max-height: 200px;
    overflow: auto;
    padding: 0;
    list-style: none;
    display: none;
    box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.1);
}

.content .bg-circles .select-country .select-box .select-box-option {
    display: block;
    padding: 15px;
    background-color: #fff;
    cursor: pointer;
}

.content .bg-circles .select-country .select-box .select-box-option:hover,
.content .bg-circles .select-country .select-box .select-box-option:focus {
    color: #546c84;
    background-color: #fbfbfb;
}

.content .bg-circles .select-country .select-box .dropdown {
    display: block;
    -webkit-animation-name: none;
    animation-name: none;
}

.content .bg-circles .select-country .select-box .select-box-message {
    font-size: 14px;
    font-weight: 600;
    color: red;
}

/* Change the style when the screen size is changed. */

@media only screen and (min-width: 1800px) {

    .content .bg-circles .select-country {
        width: 65vh;
        height: 65vh;
    }

    .content .bg-circles .select-country .select-box {
        width: 400px;
    }
}

@media only screen and (min-width: 2000px) {

    .content .bg-circles .select-country {
        width: 70vh;
        height: 70vh;
    }

    .content .bg-circles .select-country .select-box {
        width: 500px;
    }
}

@media only screen and (min-width: 2500px) {

    .content .bg-circles .select-country {
        width: 75vh;
        height: 75vh;
    }

    .content .bg-circles .select-country .select-box {
        width: 600px;
    }
}