.slider {
  position: relative;
  border: thin solid black;
  width: 100vw;
  margin: 1rem auto;
  text-align: center;
}

.slider-slides {
  position: relative;
  height: 400px;
}

.slider-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: all 3s ease;
  -webkit-transition: all 3s ease;
  -moz-transition: all 3s ease;
  -ms-transition: all 3s ease;
  -o-transition: all 3s ease;
}

.slider-slide.active {
  opacity: 1;
  visibility: visible;
}

.slider-slide img {
  height: inherit;
  width: inherit;
  object-fit: cover;
  object-position: 90% 90%;
}
.slider-slide h4 {
  position: relative;
  font-size: 2rem;
  color: white;
  top: -40%;
  text-shadow: 3px 2px 5px #000;
}

.slider a {
  display: block;
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  -webkit-border-radius: 50%;
  -moz-border-radius: 50%;
  -ms-border-radius: 50%;
  -o-border-radius: 50%;
  border: thin solid black;
  text-decoration: none;
  background-color: white;
  color: #000;
  transition: all 0.3s ease;
  -webkit-transition: all 0.3s ease;
  -moz-transition: all 0.3s ease;
  -ms-transition: all 0.3s ease;
  -o-transition: all 0.3s ease;
}

.slider a:hover {
  color: blue;
  border: thin solid blue;
}
.slider-btns {
  position: absolute;
  width: 100%;
  top: 50%;
  display: flex;
  justify-content: space-between;
  font-size: 3rem;
  font-weight: bold;
}