* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
  overflow-x: hidden;
}

.sekcja1{
    background: linear-gradient(to top, red, yellow);
}

.clearfix::after{
    content: "";
    display: block;
    clear: both;
}

header {
    position:relative;
    background: linear-gradient(to bottom, lime, aqua);
    height: 90vh;
    overflow: hidden;
}
header > *{
    position: absolute;
}
header img{
    position: absolute;
    bottom: 0;
    right: 0;
}
header div.witaj {
    z-index: 1;
    top: 7%;
    left: 5%;
    right: 5%;
    text-align: center;
    font-family: "Saira Condensed", sans-serif;
    font-weight: bold;
    font-size: 40px;
    color: white;
    text-transform: uppercase;
}
header h1 {
    margin-top: 25px;
    font-size: 20px;

}
header h2 {
    font-size: 20px;
    font-family: "Saira light";
}
header button {
    line-height: 32px;
    padding: 0 20px;
    text-transform: uppercase;
    color: white;
    background-color: transparent;
    font-weight: 300;
    font-size: 12px;
    border: 2px solid white;
}
header button:hover {
    color: rgb(0, 0, 0);
    border: 2px solid black;
    box-shadow: 4px 4px #000000;
    transition: all 0.2s ease;
}
header button:active {
    box-shadow: 0 2px #27ae60;
    transform: translateY(2px);
}

@keyframes migotanie {
  0%, 100% { background: radial-gradient(circle, lime, aqua); }
  50%     { background: radial-gradient(circle, aqua, lime); }
}

header button {
  animation: migotanie 2s infinite;
}


@media (orientation: portrait) and (min-width: 320px) {
    header h1 {
        font-size: 24px;

    }
    header h2 {
        font-size: 24px;
    }
    header button {
        margin-top: 24px;
        line-height: 40px;
        font-size: 16px;
    }
    header img {
        max-width: 47%;
        height: auto;
        right: -5%;
    }
}



@media (orientation: portrait) and (min-width: 360px) {
    header h1 {
        font-size: 24px;

    }
    header h2 {
        font-size: 24px;
    }
    header button {
        margin-top: 24px;
        line-height: 40px;
        font-size: 16px;
    }
    header img {
        max-width: 60%;
        height: auto;
        right: -7%;
    }
}

@media (orientation: portrait) and (min-width: 410px) {
    header h1 {
        font-size: 26px;

    }
    header h2 {
        font-size: 24px;
    }
    header button {
        margin-top: 40px;
        line-height: 50px;
        font-size: 20px;
    }
    header img {
        right: -5%;
    }
}


@media (orientation: portrait) and (min-width: 768px) {
    header p {
        font-size: 60px;
    }

    header h1 {
        font-size: 32px;

    }
    header h2 {
        font-size: 32px;
    }
    header button {
        margin-top: 60px;
        line-height: 60px;
        font-size: 24px;
        cursor: pointer;
    }
    header img {
        right: -5%;
    }
}



@media (orientation: landscape) {
    header img {
    height: 80%;
    bottom: 0;
    right: -5%;
}
header div.witaj {
    top: 15%;
    left: 7%;
    right: 48%;
}
header button {
    margin-top: 40px;
}
}

@media (orientation: landscape) and (min-width: 640px)
{
    header h1 {
        font-size: 24px;
    }
    header h2 {
        font-size: 20px; 
    }
    header button {
        margin-top: 20px;
        font-size: 16px;
        line-height: 40px;
    }
    header img {
        right: -3%;
    }
}

@media (orientation: landscape) and (min-width: 768px)
{
    header h1 {
        font-size: 24px;
    }
    header h2 {
        font-size: 24px; 
    }
    header button {
        font-size: 16px;
        line-height: 40px;
    }
}
@media (orientation: landscape) and (min-width: 1024px) {
    header img {
    height: 80%;
    bottom: 0;
    right: -3.5%;
}


}
@media (orientation: landscape) and (min-width: 1280px) {

    header p {
        font-size: 100px;
    }

    header h1 {
        font-size: 50px;
        margin-top: 40px;
    }
    header h2 {
        font-size: 35px; 
        margin-top: 20px;
    }
    header button {
        margin-top: 80px;
        font-size: 28px;
        line-height: 40px;
    }

}

/* Sekcja 1 */

section{
    min-height: 30vh;
}



.sekcja1 {
    margin-top: 50px;
    padding: 5%;
    text-align: center;
}

.sekcja1 h1 {
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    font-size: 24px;
    font-weight: bold;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.sekcja1 h2 {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 20px;
    font-weight: bold;
    text-transform: uppercase;
}

.opis {
    font-family: 'saira', sans-serif;
    font-size: 13px;
    font-weight: 300;
    margin: 20px, 0;
}

.sekcja1 img {
    max-width: 100%;
    margin: 20px 0;
    padding: 30px;
    
}




@media (orientation: portrait) {
    .sekcja1 div {
        float: none;
        width: 100%;
        margin-bottom: 20px;
    }
}

@media (orientation: landscape) {
    .sekcja1 div {
        float: left;
        width: 33%;
        margin-bottom: 0;
    }
}


@media (max-width:360px) and (orientation:portrait) {

    .sekcja1 h1 {
        font-size: 30px;
    }

    .sekcja1 h2 {
        font-size: 25px;
        word-spacing: 3px;
        margin-bottom: 20px;
    }

    .sekcja1 p {
        font-size: 17px;

    }
}



@media (min-width:360px) and (orientation:portrait) {

    .sekcja1 h1 {
        font-size: 30px;
    }

    .sekcja1 h2 {
        font-size: 25px;
        word-spacing: 3px;
    }

    .sekcja1 p {
        font-size: 15px;

    }
}

@media (min-width:360px) and (orientation:landscape) {

    .sekcja1 h1 {
        font-size: 20px;
    }

    .sekcja1 h2 {
        font-size: 16px;
        word-spacing: 3px;
    }

    .sekcja1 p {
        font-size: 15px;

    }
}




@media (min-width:500px) and (orientation:landscape) {

    .sekcja1 h1 {
        font-size: 28px;
    }

    .sekcja1 h2 {
        font-size: 15px;
        word-spacing: 3px;
    }

    .sekcja1 p {
        font-size: 15px;

    }
}


@media (min-width:768px) and (orientation:portrait) {

    .sekcja1 h1 {
        font-size: 36px;
    }

    .sekcja1 h2 {
        font-size: 30px;
        word-spacing: 3px;
        margin-bottom: 20px;
    }

    .sekcja1 p {
        font-size: 20px;

    }
}



@media (min-width:768px) and (orientation:landscape) {

    .sekcja1 h1 {
        font-size: 30px;
    }

    .sekcja1 h2 {
        font-size: 24px;
        word-spacing: 3px;
    }

    .sekcja1 p {
        font-size: 18px;

    }
}


@media (min-width:1024px) and (orientation: portrait) {


    .sekcja1 {
        margin-top: 50px;
        padding: 5% 2%;
        text-align: center;
    }

    .sekcja1 h1 {
        font-size: 54px;
    }

    .sekcja1 h2 {
        font-size: 44px;
        word-spacing: 3px;
        margin-bottom: 20px;
    }

    .sekcja1 p {
        font-size: 28px;

    }
}

@media (min-width:1024px) and (orientation:landscape) {


    .sekcja1 {
        margin-top: 50px;
        padding: 5% 2%;
        text-align: center;
    }

    .sekcja1 h1 {
        font-size: 44px;
    }

    .sekcja1 h2 {
        font-size: 24px;
        word-spacing: 3px;
        margin-bottom: 20px;
    }

    .sekcja1 p {
        font-size: 18px;

    }
}