style.css

* {
  margin: 0;
  box-sizing: border-box;
  padding: 0;
  font-family: "Roboto", sans-serif;
}

body{
  background-image: linear-gradient(to top, #0e2a55, #005b8c, #008e99, #00bc76, #ace03a);
}

.topnav {
background-image: linear-gradient(to top, #3847e5, #1a54db, #0b5ece, #2065be, #376aac);
  overflow: hidden;
  position: fixed;
  z-index: 1;
  left: 0;
}

.topnav a {
  float: left;
  text-align: center;
  font-size: 18px;
  padding: 14px 16px;
  color: #f2f2f2;
  text-decoration: none;
}

.topnav a:hover {
  background-color: rgb(170, 196, 212);
  color: black;
}

.intro {
  left: 0;
  position: relative;
}
.fade-container::after {
  content: "Hello, I am Sandeep a passionate software Developer ";
  color:#5DDE49;
 background-image: linear-gradient(to top, #4fe538, #94c400, #afa300, #b68420, #ac6a37);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 40px;
  height: 100%;
  width: 100%;
  position: absolute;
  background: black;
  opacity: 1;
  top: 0%;
  left: 0%;
  opacity: 0;
  transition: opacity 300ms;
}
.fade-container:hover::after {
  opacity: 0.5;
}

.intro img {
  max-width: 100%;
  height: 500%;
  height: auto;
  opacity: 0.8;
}



.card {
background-image: linear-gradient(to bottom, #0f1929, #004562, #00777b, #00a762, #94cd16);
  /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
  transition: 350ms;
  transition-timing-function: ease-out;
}

.card:hover {
  transform: scale(1.1);
}

/* now working on footer*/

.footer {
  height: 100px;
  left: 0;
  width: auto;
  background-image: linear-gradient(to top, #3847e5, #1a54db, #0b5ece, #2065be, #376aac);
  position: relative;
}

.footer a {
  color: #f2f2f2;
  padding: 15px 15px;
  text-decoration: none;
}

.tag-line {
  position: absolute;
  top: 50%;
  left: 50%;
}

.moto {

  color: aquamarine;
    }