*{
  margin: 0;
  padding: 0;
}

body{
  background: linear-gradient(135deg, #153677, #4e085f);
  font-size: 1.1em;
  font-family: 'Poppins', sans-serif;
}

main{
  display: grid;
  place-items: center;
  min-height: 100dvh;
}

.container{
  background-color: #fefefe;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 2rem;
  border-radius: 0.8rem;
  gap: 1rem;
}

.header{
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 1rem;
}

.input-box{
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.5em;
  background-color: #ebedee;
  padding: 0rem 2rem;
  border-radius: 2rem;
}

.input-task{
  border: none;
  border-radius: 1.5rem;
  background-color: transparent;
  outline: none;
  flex: 1;
  padding: 10px;
}

.add-btn{
  border: none;
  color: #fefefe;
  background-color: #ff643b;
  padding: 1rem 1.5rem;
  border-radius: 1.5rem;
  cursor: pointer;
  margin-right: -30px;
}

ul li{
  list-style: none;
  font-size: 17px;
  padding: 12px 8px 12px 50px;
  cursor: pointer;
  user-select: none;
  position: relative;
}

ul li::before{
  content: '';
  position: absolute;
  height: 28px;
  width: 28px;
  border-radius: 50%;
  background-image: url(images/unchecked.png);
  background-size: cover;
  background-position: center;
  top: 12px;
  left: 8px;
}

ul li.checked{
  color: #555;
  text-decoration: line-through;
}

ul li.checked::before{
  background-image: url(images/checked.png);
}

ul li span{
  position: absolute;
  text-align: center;
  width: 30px;
  height: 30px;
  font-size: 18px;
  cursor: pointer;
  color: #555;
}

ul li span:hover{
  border-radius: 50%;
  background-color: #ebedee;
}