style.css

body {
  margin: 0;
  padding: 0;
  background: url('greenBlur.jpg') center center no-repeat;
  background-size: cover;
  height: 100vh;
}
.container {
  padding: 40px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
}

.hamburger{
    position: relative;
    height: 40px;
    width: 40px;
    z-index: 1;
}

.logo {
  position: relative;
}

.logo h1 {
    color: #22cf5b;
    font-family: 'Montserrat', sans-serif;
}

.line {
  position: absolute;
  width: 32px;
  height: 4px;
  margin: 7px;
  background: rgb(40, 40, 40);
  opacity: .9;
  transition: all .4s ease;
}

.line:nth-child(2) {
  top: 10.3px;
}

.line:nth-child(3) {
  top: 20.6px;
}

.rotate {
  transform: rotate(315deg);
}

.rotate:nth-child(2){
  opacity: 0;
}
.rotate:nth-child(3){
  top: 0px;
  transform: rotate(225deg);
}


.hamburger:hover > .rotate:nth-child(1) {
  transform: rotate(410deg);
}
.hamburger:hover > .rotate:nth-child(3) {
  transform: rotate(310deg);
}

.nav {
  transform: scale(0);
  background-image: linear-gradient(120deg, #d4fc79 0%, #96e6a1 100%);
  position: absolute;
  min-width: 600px;
  min-height: 600px;
  top: -120px;
  left: -230px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 48%;
  transition: all .4s ease-out;
}
.openNav {
  transform: scale(1)!important;
}
ul {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  list-style-type: none;
  font-family: 'Montserrat', sans-serif;
  text-align: left;
  font-weight: 400;
}

ul a {
  font-size: 20px;
  text-decoration: none;
  margin: 4px;
  color: #464646;
}

li {
  text-decoration: none;
  text-align: left;
}