style.css

*
{
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    box-sizing: border-box;
}
body
{
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: rgb(105, 52, 127);
}
.conatiner
{
    padding: 30px 40px;
    background: #fff;
    border-radius: 5px;
    box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
}
.conatiner .box
{
    max-width: 100%;
    display: flex;
    padding: 20px 30px;
}
.conatiner .box .inputbox input
{
    padding: 10px 20px;
    border: none;
    outline: none;
    background: #f1f3f4;
    border-top-left-radius: 5px;
    border-bottom-left-radius: 5px;
}
.conatiner .box .btn button
{
    padding: 10px 20px;
    background: #0cc0df;
    border: none;
    outline: none;
    border-top-right-radius: 5px;
    border-bottom-right-radius: 5px;
    cursor: pointer;
}
.conatiner .list
{
    padding: 10px 20px;
    width: 100%;
}
.conatiner .list .new_list
{
    padding: 10px 20px;
    border-radius: 10px;
    background: #f1f3f4;
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
}
.conatiner .list .new_list .check input
{
    border-radius: 50%;
}
.conatiner .list .new_list .text p
{
    font-size: 14px;
}
.conatiner .list .new_list .del i
{
    font-size: 14px;
    cursor: pointer;
    color: crimson;
}