.header .box {
    transition: ease 1s;
    margin-top: -150px;
    opacity: 0;
    animation-name: nadpis;
    animation-duration: 1s;
    animation-fill-mode: forwards;
    animation-delay: 2.5s;
    animation-direction: alternate;
}

@keyframes nadpis {
    from{margin-top: -150px; opacity: 0;}
    to{margin-top: 0px; opacity: 1;}
}

.post-text {
    transition: ease 1s;
    margin-top: -150px;
    opacity: 0;
    animation-name: post-text;
    animation-duration: 1s;
    animation-fill-mode: forwards;
    animation-delay: 2.5s;
    animation-direction: alternate;
}

@keyframes post-text {
    from{margin-top: -150px; opacity: 0;}
    to{margin-top: -200px; opacity: 1;}
}