*, *::before, *::after{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    font-size: 16px;
    font-weight: normal;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #111111;
}

header{
    height: 60px;
    background-color: white;
    box-shadow: rgba(60, 64, 67, 0.3) 0px 1px 2px 0px, rgba(60, 64, 67, 0.15) 0px 1px 3px 1px;
    position: sticky;
    top: 0;
    left: 0;
    z-index: 99;
    margin-bottom: 60px;
}
@media(max-width: 768px){
    header h1{
        font-size: 24px;
    }
}
header .logo{
    height: 40px;
}

.btn:focus,
.btn-sm:focus,
.form-control:focus{
    outline: none !important;
    box-shadow: none !important;
    border: 1px solid #0d6efd !important;
}

.single-file{
    border: 1px solid #d8d8d8;
    padding: 10px 15px 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1)
}

#textOutput{
    display: block;
    min-height: 450px;
}