style.css

@charset "UTF-8";
html, body {
  width: 100%;
  height: 100%;
  font-family: "Monaco", Inconsolata, monospace;
  font-size: 17px;
  color: #f8f8f8;
}

.wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.terminal {
  width: 90%;
  max-width: 600px;
  height: 40%;
  min-height: 300px;
  background: rgba(8, 57, 82, 0.64);
  border-radius: 7px 7px;
  transition: box-shadow 0.3s linear;
  -webkit-backdrop-filter: blur(6px);
          backdrop-filter: blur(6px);
}
.terminal:hover {
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.5);
}
.terminal:active {
  cursor: move;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.9);
}
.terminal__head {
  width: 100%;
  height: 25px;
  background: #ccc linear-gradient(to bottom, #ebebeb, #d5d5d5);
  border-radius: 7px 7px 0 0;
  display: flex;
  justify-content: start;
  align-items: center;
}
.terminal__text {
  padding: 20px 5%;
  line-height: 1.5;
}
.terminal__text a {
  color: #52a563;
  text-decoration: none;
}
.terminal__text__span:before {
  content: "$ ";
  color: #52a563;
}

.head__circle {
  position: relative;
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-left: 4px;
  font-size: 0;
  font-weight: 700;
  border-radius: 10px;
}
.head__circle--close {
  background: #ff5c5c;
  border: 1px solid #e33e41;
  margin-left: 7px;
}
.head__circle--close:hover:before {
  top: -14px;
  left: 0.4px;
  font-size: 22px;
  color: #820005;
  content: "⨯";
  position: absolute;
}
.head__circle--turn {
  background: #ffbd4c;
  border: 1px solid #e09e3e;
}
.head__circle--turn:hover:before {
  content: "";
  top: 4px;
  left: 1px;
  width: 8px;
  height: 2px;
  background: #9a5518;
  position: absolute;
}
.head__circle--expand {
  background: #00ca56;
  border: 1px solid #14ae46;
}
.head__circle--expand:hover:before {
  content: "";
  top: 4px;
  left: 1px;
  width: 8px;
  height: 2px;
  background: #006519;
  position: absolute;
}
.head__circle--expand:hover:after {
  content: "";
  top: 1px;
  left: 4px;
  width: 2px;
  height: 8px;
  background: #006519;
  position: absolute;
}

html {
	background: url("https://images.alphacoders.com/188/188911.jpg") no-repeat center;  
}