styles.css

*{
    margin: 0;
    padding: 0;
    font-family: "montserrat",sans-serif;
    box-sizing: border-box;
}

body{
    background-image: linear-gradient(120deg,#27ae60,#2980b9);
    min-height: 100vh;
}

.container{
    max-width: 800px;
    margin: auto;
    padding: 10px;
}

.taskAdd{
    width: 100%;
    border: none;
    border-bottom: 2px solid black;
    padding: 5px;
    outline: none;
    margin-bottom: 5px;
}

.txtb{
    width: 88%;
    border: none;
    background: none;
    padding: 10px;
    outline: none;
    font-size: 20px;
}

#taskAddBtn{
    padding: 15px;
    float: right;
    cursor: pointer;
    border: none;
    background: none;
}

#taskAddBtn:hover{
    color: rgb(95, 95, 76);
    background-color: #2980b9;
    border-radius: 5px;
    /* border: black solid; */
}

.task{
    width: 100%;
    background: rgba(255, 255, 255, 50%);
    padding: 20px;
    margin: 6px 0;
    overflow: hidden;
}

.task i{
    float: right;
    margin-left: 20px;
    cursor: pointer;
    background: none;
    border: none;
}

.comp .task{
    background: rgba(0, 0, 0, .5);
}