Assignment.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: aqua;
  width: auto;
}
.left {
  margin-left: 40px;
}

.left img {
  width: 50px;
  margin: 10px 40px 0 10px;
  cursor: pointer;
}
img:hover {
  transform: scale(1.1);
}
.center .input {
  width: 400px;
  border-radius: 10px;
  padding: 10px;
}
.input:focus {
  border: 3px solid crimson;
}

.center button {
  border-radius: 10px;
  padding: 10px;
  cursor: pointer;
}
button:hover {
  background-color: green;
  color: white;
}
.right {
  margin-right: 40px;
}
.right img {
  width: 50px;
  margin: 10px 20px 0 0;
  cursor: pointer;
}

@media screen and (max-width: 770px) {
  .center .input {
    width: 200px;
    transition: all 500ms ease;
  }
}
@media screen and (max-width: 500px) {
  .left {
    margin-left: 5px;
  }

  .left img {
    margin: 10px 10px 0 10px;
  }

  .right {
    margin-right: 5px;
  }

  .center .input {
    width: 100px;
    transition: all 500ms ease;
  }
}

@media screen and (max-width: 340px) {
  .center .input {
    width: 70px;
    transition: all 500ms ease;
  }
}