*{margin: 0; padding: 0;}

.panel1{
    height: 72px;
    width: 1440px;
    left: 0px;
    top: 0px;
    border-radius: 0px;
}

header{
    width: 100%;
    height: 400px;
    background-color: #FEF;
}

nav{
    position: absolute;
    width: 600px;
    height: 40px;
    left: 30%;
    top: 20px;
    border: 2px solid green;
}

.menu{
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    padding: 0px;
    
    position: absolute;
    width: 300px;
    height: 26px;
    left: 90px;
    top: calc(50% - 26px/2);
    border: 1px solid blue;
}

.menu_item{
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    padding: 0px;
    
    position: absolute;
    width: 432px;
    height: 26px;
    left: 190px;
    top: calc(50% - 26px/2);
}

.koechto{
    position: absolute;
    width: 496px;
    height: 249px;
    left: 344px;
    top: 20px;

/* display/2 */

    font-family: 'Lato';
    font-style: normal;
    font-weight: 900;
    font-size: 64px;
    line-height: 130%;
    /* or 83px */
    
    display: flex;
    align-items: center;
    letter-spacing: 1px;
    
    /* gray/900 */
    
    color: #1E212C;
    z-index: 2;
}

.mainimg{
    z-index: 1;
}