body{
    margin:0;
    padding:0;
    font-family: 'Poppins', sans-serif;
    box-sizing: border-box;
    background:linear-gradient(135deg,blue,#4e085f)
    
}

.container{
    width:100%;
    min-height:100vh;
   
}
.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-top: 20px;
    margin-bottom:20px;

}
.todo-app h2 img{
    width:40px;
    margin-right: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;
    font-weight:14px;

    
}
button{
    border:none;
    outline:none;
    padding:16px 50px;
    background:#ff5945;
    color:#fff;
    font-size:16px;
    border-radius:40px;
    cursor:pointer;
}

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;
    width:28px;
    height:28px;
    border-radius:50%;
    background-image: url(./cheked.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(./checked\ 2.png)
}

ul li span {
    position:absolute;
    right: 0;
    top: 0;
    width:40px;
    height: 40px;
    font-size:22px;
    color:#555;
    line-height:40px;
    text-align : center;
    border-radius:50%;

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