*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html,body{
    height: 100%;
    width: 100%;
}

#main{
    display: flex;
     align-items: center;
    /* justify-content: center; */
    height: 100%;
    width: 100%;
    background-color: antiquewhite;
}
 #box{
    background-color: aquamarine;
    width: 23%;
    height: 59%;
    border: 1px solid black;
    border-radius: 20px;
    box-shadow: 0 0 8px black;
 }
 
#inputbar{
    margin-top: 30px;
    margin-left: 50px;
    
}

#tasklist{
   margin: 20px 50px; 
   
}

#tasklist li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    width: 100%;


}
 .completed{
    text-decoration: line-through;
    opacity: 0.6;
 }