.img-comp-container {
    position: relative;
    height: 100%;
}

.img-comp-img {
    position: absolute;
    width: auto;
    height: auto;
    overflow: hidden;
}

.img-comp-img img {
    display: block;
    vertical-align: middle;
}

.img-comp-slider {
    position: absolute;
    z-index: 9;
    cursor: ew-resize;
    /* Aparência do slider */
    width: 40px;
    height: 40px;
    opacity: 0.8;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.img-comp-slider::before,
.img-comp-slider::after {
    content: "";
    position: absolute;
    width: 0;
    height: 0;
    border-style: solid;
}

.img-comp-slider::before {
    border-width: 7px 10px 7px 0;
    border-color: transparent white transparent transparent;
    left: 8px;
}

.img-comp-slider::after {
    border-width: 7px 0 7px 10px;
    border-color: transparent transparent transparent white;
    right: 8px;
}