sheep-btn {
    display: block;
    position: fixed;
    z-index: 1000;
    height: 50px;
    width: 50px;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.4);
    background-size: 45px;
    background-repeat: no-repeat;
    background-position: 50% 80%;
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.5);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: all .2s;
    right: 10px;
    bottom: 10px;
    transform: translateZ(0);
  }
  sheep-btn, .sheep-blockscreen sheep-btn:hover {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 480 480' stroke='white' stroke-opacity='0.7' stroke-width='20' fill='none'%3E%3Cpath d='M90 90a50 50 0 0 0 0 100H98.579A150 150 0 1 0 381.421 190H390a50 50 0 0 0 0 -100a50 50 0 1 1 -100 0a50 50 0 1 1 -100 0a50 50 0 1 1 -100 0z'/%3E%3C/svg%3E");
  }
  sheep-btn:hover {
    background-color: rgba(255,255,255,0.8);
    box-shadow: 0 0 4px rgba(0,0,0,0.5);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 480 480' stroke='black' stroke-opacity='0.7' stroke-width='20' fill='none'%3E%3Cpath d='M90 90a50 50 0 0 0 0 100H98.579A150 150 0 1 0 381.421 190H390a50 50 0 0 0 0 -100a50 50 0 1 1 -100 0a50 50 0 1 1 -100 0a50 50 0 1 1 -100 0z'/%3E%3C/svg%3E");
  }
  sheep-btn:active {
    box-shadow: 0 0 2px rgba(0,0,0,0.5);
    transform: translateZ(0) scale(0.9);
  }
  sheep-btn:focus {
    outline: none;
    box-shadow: 0 0 4px rgba(0,0,0,0.5), 0 0 0 5px rgba(79,161,167,0.3);
  }
  .sheep-blockscreen {
    pointer-events: none;
  }
  .sheep-blockscreen sheep-btn {
    right: 50%;
    bottom: 50%;
    width: 142vmax;
    height: 142vmax;
    margin: -71vmax;
    background-color: black;
    background-size: 90px;
    background-position: 50% 50%;
    box-shadow: none;
    pointer-events: none;
    transition: all .5s;
  }