body {
    font-family: 'Roboto', sans-serif;
    background-color: aliceblue;
}

.ageCalculator {
    display: flex;
    justify-content: center;
    background-color: white;
    width: 650px;
    margin: 0 auto;
    margin-top: 10vh;
    height: 45vh;
    box-shadow: 2px 2px 2px 2px gray;
    text-align: center;
}

.calcBtn {
     background-color: blue;
     width: 130px;
     height: 3.5vh;
     border-radius: 6px;
     margin: 0 auto;
     margin-top: 5vh;
     text-align: center;
     padding-top: 2vh;
     color: white;
     font-size: 13px;
     cursor: pointer;
}

.calcBtn:hover {
    background-color: rgb(13, 13, 169);
    transition: 0.4s ease-in;
}

.inp {
    width: 280px;
    height: 2vh;
    padding: 2vh;
    border-radius: 5px;
    border: 1px solid gray;
}

.innerTxt {
    margin-top: 3vh;
} 


@media screen and (max-width: 768px) {
      .ageCalculator {
        display: flex;
        width: 300px;
        margin: 0;
        text-align: center;
        height: 37vh;
      }

      .inp {
        width: 180px;
        height: 1vh;
      }

      .calcBtn {
        width: 90px;
        height: 1vh;
        padding: 2vh;
        padding-top: 1.2vh;
        margin-top: 3vh;
      }
}