body { 
   
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: rgb(230, 230, 230);
}  
 .container {
    border: none;
    background-color: rgba(156,222,252, 0.5);
   border-radius: 15px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    height: auto;
    width: 50vh;
    box-shadow: 4px 5px 6px ;
} 
 .header {
    text-align: center;
    padding: 10px;
    font-size: 1.7em;
    font-weight: 900;
   
    margin: 20px;
    border-bottom: 0.5px solid white;
}  
.addtask {
    display: flex;
    justify-content: space-evenly;
    margin: 20px;
} 
input{
    padding: 7px;
    
    border-radius: 5px;
}
button:hover{
    border: 1px solid black;
    box-shadow: 2px 2px 5px black;
    cursor: pointer;
}
button{
    background-color: rgb(244, 242, 153);
    color: rgb(11, 11, 11);
    padding: 4px;
    border-radius: 5px;
} 
ul{
    list-style-type: none;
    padding: 15px;
}
li{
    display: flex;
    justify-content: space-between;
    border: 1px solid white;
}