header{
    padding: 10px 15px;
    background-color: black;
    display: flex;
    vertical-align: center;
    align-items: center;
    position: relative;
}

.echo-invest{
    font-size: 35px;
    font-family: 'Nunito Sans', 'sans-serif';
    font-weight: 700;
    color: white;
    display: inline;
    position: absolute;
    padding: 0;
    margin: 0;
}

.search-container{
    margin: auto;
    display: inline-block;
    position: relative;
}


.search-input{
    font-size: 18px;
    display: inline;
    width: 392px;
    height: 25px;
    border-radius: 5px;
    margin: 0;
    margin-left: 15px;
    padding-left: 8px;
    z-index: 1;
}

@media screen and (max-width: 1024px)
{
   header{
        justify-content: space-between;
   }

   .echo-invest{
        position: relative;
   }
}

@media screen and (max-width: 768px){
    .search-input{
        width: 300px;
    }
}

@media screen and (max-width: 425px)
{
    header{
        display: block;
    }

    .echo-invest{
        font-size: 25px;
        position: static;
        display: block;
        width: 100%;
        margin-bottom: 8px;
    }

    .search-container{
        margin: 0;
        display: block;
        width: calc(100% - 8px);
    }

    .search-input{
        width: 100%;
        display: inline-block;
    }
}