*
{
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  box-sizing: border-box;

}

.container {
  width: 100%;
  padding: 10px;
  min-height: 100vh;
  background: linear-gradient(135deg,#153677,#4e085f);
}

.todo-app {
  width: 100%;
  max-width: 540px;
  background: #fff;
  margin: 100px auto 20px;
  padding: 40px 30px 70px;
  border-radius: 10px;
}

.todo-app h2 {
  color: #002765;
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.todo-app h2 img {
  width: 30px;
  margin-left: 10px;
}

.row{
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #edeef0;
  border-radius: 30px;
  padding-left: 20px;
  margin-bottom: 25px;
}
input{
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  padding: 10px;
}
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.delete-button {
  border: 1px solid;
  outline: none;
  padding: 10px 25px;
  background: #fff;
  color: #ff5945;
  cursor: pointer;
  border-radius: 10px;
  margin-left: auto;
}

.delete-button:hover{
  background-color: #ff5945;
  color: #fff;
  transition: 0.4s ease;

}
.add-button{
  border: none;
  outline: none;
  padding: 15px 40px;
  background: #ff5945;
  color: #fff;
  font-size: 15px;
  cursor: pointer;
  border-radius: 35px;

}

ul li {
  list-style: none;
  font-size: 17px;
  padding: 12px 8px 12px 50px;
  user-select: none;
  cursor: pointer;
  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;
  right: 0;
  top: 5px;
  width: 40px;
  height: 40px;
  font-size: 22px;
  color: #555;
  line-height: 40px;
  text-align: center;
  border-radius: 50%;
}

ul li span:hover {
  background: #edeef0;
}