移动端网页强制竖屏操作

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                pd.style.left = '0';
                pd.style.top = '0';
                pd.style.width = '100%';
                pd.style.height = '100%';
                pd.style.overflow = 'hidden';
                pd.style.backgroundColor = '#2e2e2e';
                pd.style.textAlign = 'center';
                pd.style.zIndex = '99999';
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                var img = document.createElement('img');
                img.src = imgData;
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                img.style.margin = '60px auto 30px'
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                var p = document.createElement('p');
                p.style.width = '100%';
                p.style.height = 'auto';
                p.style.fontSize = '22px';
                p.style.color = '#626262';
                p.style.lineHeight = '34px';
                p.style.textAlign = 'center';
                p.innerHTML = '为了您的良好体验';
                p.appendChild(br);
                p.innerHTML += '请将手机/平板竖屏操作';
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