.container {
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider {
    display: block;
    position: relative;
    width: 100%;
    /*max-width: 900px;*/
    /*margin: 10px;*/
    background-color: white;
    overflow: hidden;
}

.slider__slides {
  width: 100%;
  padding-top: 66%;
}

.slider__slide {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 50px;
    font-weight: bold;   
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: lemonchiffon;
    transition: 1s;
    opacity: 0;
}

.slider__slide.active {
    opacity: 1;
}

.slider__slide img {
  width: 100%;
}

.slider__nav-button {
    position: absolute;
    height: 70px;
    width: 70px;
    opacity: .6;
    cursor: pointer;
}

#nav-button--prev {
    top: 50%;
    left: 0;
    transform: translateY(-50%);
}

#nav-button--next {
    top: 50%;
    right: 0;
    transform: translateY(-50%);
}

#nav-button--prev::after,
#nav-button--next::after {
    content: "";
    position: absolute;
    border: solid khaki;
    border-width: 0 4px 4px 0;
    display: inline-block;
    padding: 3px;
    width: 40%;
    height: 40%;
}

#nav-button--next::after{
    top: 50%;
    right: 50%;
    transform: translate(25%, -50%) rotate(-45deg);
}

#nav-button--prev::after {
    top: 50%;
    right: 50%;
    transform: translate(75%, -50%) rotate(135deg);
}

.slider__nav {
    position: absolute;
    bottom: 3%;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

.slider__navlink {
    display: inline-block;
    height: 13px;
    width: 13px;
    border-radius: 50%;
    border: 1px #33094c solid;
    background-color: #33094c;
    opacity: 1;
    margin: 0 5px 0 5px;
    cursor: pointer;
}

.slider__navlink.active {
    background-color: #9c27b0;
    border: 1px khaki solid;
}


@media screen and (max-width: 640px) {
  .slider__nav-button {
	display:none;
    height: 40px;
    width: 40px;
  }
  .slider__navlink {
    height: 12px;
    width: 12px;
  }
}