.navigation21 .previous21 {
    position: absolute;
    top: 40%;
    left: 10px;
    font-size: 15px;
    z-index: 5;
}

.navigation21 .next21 {
    position: absolute;
    top: 40%;
    right: 10px;
    font-size: 15px;

    z-index: 5;
}

.navigation21 .btn-nav21 {
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    border-radius: 50%;
    width: 25px;
    height: 25px;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 5px;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
}

    .navigation21 .btn-nav21:hover {
        background: white;
    }

.image-fade21 {
    display: none;
}

.img21 {
    vertical-align: middle;
    width: 100%;
}

/* carousel container */
.container21 {
    max-width: 50%;
    position: relative;
    margin: auto;
}



.dot21 {
    height: 15px;
    width: 15px;
    margin: 0 2px;
    background-color: gray;
    border-color: #878787;
    border-width: 5px;
    border-style: solid;
    border-radius: 50%;
    display: inline-block;
    transition: border-color 0.6s ease;
}

.active21 {
    border-color: black;
}

/* Animation */
.fade21 {
    -webkit-animation-name: fade-image;
    -webkit-animation-duration: 1.5s;
    animation-name: fade-image;
    animation-duration: 1.5s;
}