* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    }
    body {
    background: #a6dfee;
    font-size: 18px;
    font-family: 'Montserrat', sans-serif;
    margin-left: 10%;
    margin-right: 50%;
    }
    h1{
        margin-top: 20px;
        width: 800px;
    }
    .container {
    flex: 0 1 700px;
    margin: auto;
    padding: 10px;
    }
    
    .screen-body-item {
    width: 100px;
    padding: 13px;
    }
    input {
    margin: 10px 10px 10px;
    }
    .showdata {
    color: black;
    font-size: 2rem;
    padding-top: 10px;
    padding-bottom: 10px;
    width: 100%;
    }
    .form-control{
        width: 150px;
        height: 30px;
    }
    .btn{
        width: 250px;
    }
    .app{
        width:700px;
        background-color: aliceblue;
        padding: 20px;
        border-radius: 20px;
    }
    .form-group{
        width: 800px;
        color: black;
    }