*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html{
    font-size: 62.5%;
}
body{
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f0f0f0;
}
.container{
    max-width: 400px;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
    text-align: center;
}
h1{
    color: #333;
}
.task-form{
    margin-bottom: 20px;
}
#task-input{
    width: 70%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 3px;
    margin-right: 10px;
}
#add-task-btn{
   padding: 8px 5px;
   background-color: #007bff;
   color: #fff;
   border: none;
   border-radius: 3px;
   cursor: pointer;
}
ul{
    list-style: none;
    padding: 0;
}
li{
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #f0f0f0;
    padding: 10px;
    margin: 10px 0;
    border-radius: 3px;
}
.complete{
    text-decoration: line-through;
    color: #ccc;

}
.delete-btn{
    background-color: #ff3636;
    color: #fff;
    border: none;
    border-radius: 5px;
    padding: 5px 10px;
    cursor: pointer;
}