Евгений

img {
max-width: 100%;
max-height: 100%;
}

html,
body {
   scroll-behavior: smooth;
}

.slider {
   display: flex;
   position: relative;
   opacity: 0;
   transition: opacity 1s ease;
}

.owl-loaded {
   opacity: 1;
   display: block;
}

.userIcon {
    width: 50px;
    height: 50px;

    border-radius: 50%;
    background-color: darken($base-color, 30%);

    overflow: hidden;

    display:flex;

    img{
      margin: auto;
      max-width: 100%;
      max-height: 100%;
    }
}