* {
    box-sizing: border-box;
} 


body {
    font-family: 'Montserrat', Arial, sans-serif;
    background-color: #fff;
    color: #000;
    margin: 0;
    padding: 0; 
  overflow: hidden;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-y: auto;
    max-height: 100vh;
}

.header {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    background: url(https://www.vietsov.com.vn/_catalogs/masterpage/vietsov/assets/images/header-bg.jpg) no-repeat 308px 6px;
    width: 700px;
}

.logo {
    width: 131px;
    margin-bottom: 18px;
    margin-top: 27px;
    margin-left: 22px;
}

.nameco {
    color: #004b9f;
    font-family: Roboto, sans-serif;
    font-size: 24px;
    font-weight: 500;
    text-transform: uppercase;
    line-height: 32px;
    white-space: nowrap;
    margin-left: 35px;
}

.nameco strong {
    color: #e90000;
    display: block;
    font-size: 36px;
    font-weight: 900;
    padding-left: 75px;
}

.body {
    text-align: center;
    margin-bottom: 30px;
}

.body h1 {
    font-size: 36px;
    margin: 0;
    color: #2d65c3;
}

.form-container {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    flex-direction: column;
    justify-content: center;
}

.form {
    max-width: 600px;
    width: 90%;
}

.form label {
    font-size: 1.5em; 
    line-height: 2;
}

.form input[type="text"],
.form input[type="number"] {
    width: 100%;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-bottom: 20px;
    padding: 10px;
    font-size: 1.5em;
    
    font-family: 'Montserrat';
    font-weight: 600;
    
}

.form button {
    padding: 10px 20px;
    font-size: 18px;
    background-color: #1360c1;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.form button:hover {
    background-color: #0a488f;
}

.result-container {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 20px;
}

.result {
    flex-basis: calc(90% - 10px);
    text-align: center;
    overflow: hidden;
}

.result h2 {
    font-size: 1.5em;
    margin-bottom: 10px;
}

.result .image {
    max-width: 100%;
    max-height: 800px;
    margin-bottom: 10px;
}

.result a {
    font-size: 18px;
    color: #1360c1;
    text-decoration: none;
}

.result a:hover {
    text-decoration: underline;
}

.footer {
    margin-top: auto;
    text-align: center; 
    font-size: 1em;
    color: #8f8686; 
    bottom: 0;
}

@media only screen and (min-width: 1200px) {
    .form input[type="text"],
    .form input[type="number"] {
        font-size: 1em;
    }

    .result h2,
    .result a {
        font-size: 1em;
    }

    .form label {
        font-size: 1em;
        margin-bottom: 10px;
    }

    .result h2 {
        font-size: 1em; 
    }

    .form button {
        font-size: 1.2em;
    }

    .result h2 {
        font-size: 24px;
        margin-bottom: 10px;
    }

    .result {
        flex-basis: calc(60% - 10px);
    }
    
    .mainvsp {
        flex-direction: row;
        display: flex;
    }

}

@media only screen and (max-width: 500px) {
    .body h1{
        font-size:1.6em;
    }
    .form label, .form input[type=text], .form input[type=number]{
        font-size:1em;
    }
    .header{
        width: 100%;
        background:url(https://www.vietsov.com.vn/_catalogs/masterpage/vietsov/assets/images/header-bg.jpg) no-repeat 37px 6px;
    margin-bottom: 0;
    }
    .logo{width:30%;}
    
    .nameco{
        font-size: 1em;}
    
    .nameco strong{
        padding-left: 0;
        font-size: 1.4em;}
    
    .body{
        font-size: 0.8em;
        margin-bottom: 15px;
    }
    img.img-responsive {
        width: 100%;
    }
    
    .form input[type="text"],
    .form input[type="number"],
    .form label {
        font-size: 1em; 
    }
    
    .footer   {
    font-size: 0.7em;
    padding: 20px;
        
    }
    
}
 
/* btn-vsp */
.btn-vsp {
border: none;
background: rgb(0,172,238);
background: linear-gradient(0deg, rgba(0,172,238,1) 0%, rgba(2,126,251,1) 100%);
color: #fff;
overflow: hidden;
position:relative;
}

.btn-vsp:hover {
text-decoration: none;
color: #fff;
} 

.logo{
position:relative;
    overflow: hidden;
}
.logo a:before,
.btn-vsp:before {
position: absolute;
content: '';
top: -180px;
left: 0;
width: 20px;
height: 100%;
background-color: #ffffffb3 ;
animation: shiny-vsp 5s ease-in-out infinite;
}

.btn-vsp:hover {
opacity: .7;
}

.btn-vsp:active {
box-shadow: 4px 4px 6px 0 rgba(255,255,255,.3),
-4px -4px 6px 0 rgba(116, 125, 136, .2),
inset -4px -4px 6px 0 rgba(255,255,255,.2),
inset 4px 4px 6px 0 rgba(0, 0, 0, .2);
}

/* Shiny effect */
@keyframes shiny-vsp {
0% { transform: scale(0) rotate(45deg); opacity: 0; }
15% { transform: scale(0) rotate(45deg); opacity: 0.5; }
30% { transform: scale(4) rotate(45deg); opacity: 1; }
45% { transform: scale(50) rotate(45deg); opacity: 0; }
60% { transform: scale(50) rotate(45deg); opacity: 0; }
75% { transform: scale(4) rotate(45deg); opacity: 1; }
90% { transform: scale(0) rotate(45deg); opacity: 0.5; }
100% { transform: scale(0) rotate(45deg); opacity: 0; }
}