body {
    background: linear-gradient(180deg,#000 0,#2e2e2e 300px,#000 1000px);
    color: #ffffff;
    /*font-family: "Times New Roman";*/
    width: 100vw;
    height: 100vh;
    overflow-x: hidden;
    overflow-y: hidden;
}

#header {
    display: flex;
    align-items: center;
    width: 100vw;
    height: 10vh;
}

#header p {
    width: 90vw;
    font-size: 3rem;
    text-align: center;
}

#xlsPart {
    display: block;
    width: 100vw;
    height: 15vh;
    margin-top: 5vh;
}

#xlsPart1 {
    width: 50vw;
    float: left;
}

#xlsPart2 {
    width: 50vw;
    float: left;
}

#xls-input-file {
    font-size: 1rem;
}

#xlsBtn, .boton {
    width: 15vw;
    height: 3vh;
    font-size: 1rem;
    border-radius: 10px;
    margin-left: 3vw;
}

#x83Part {
    display: none;
    height: 15vh;
    width: 100vw;
}

#x83Part1 {
    width: 50vw;
    float: left;
}

#x83Part2 {
    width: 50vw;
    float: left;
}

#x84Part {
    display: none;
    height: 15vh;
    width: 100vw;
}

#x84Part1 {
    width: 50vw;
    float: left;
}

#x84Part2 {
    width: 50vw;
    float: left;
}

#footer {
    font-size: 1rem;
    text-align: center;
    height: 5vh;
    position: absolute;
    bottom: 0px;
    left: 50%;
    transform: translateX(-50%);
}